Guelph Cross

A portable reliquary cross made in a Lower Italian or Sicilian workshop in the first half of the twelfth century, holding a particle of the True Cross under rock crystal and, by its own nielloed inscription, relics of Peter, Mark, John the Baptist and Sebastian besides. It came into the treasury of Brunswick Cathedral at an undocumented date, at least a century after that treasury's own eleventh-century founding gift, and stayed there until the House of Guelph sold the entire 82-piece treasure to a consortium of four Frankfurt dealers in 1929.

This cross was one of 42 pieces the consortium had not managed to sell by 1933. In 1935, amid the Nazi state's escalating economic campaign against Jewish-owned businesses, the consortium sold those 42 pieces to the Prussian state for 4.25 million Reichsmarks. Germany's Advisory Commission on Nazi-looted cultural property (the Limbach Commission) ruled in 2014 that this was not a forced sale; the dealers' heirs, who argue that it was, took the dispute to the United States Supreme Court, which in 2021 decided only a jurisdictional question about the Foreign Sovereign Immunities Act and never ruled on whether the sale itself was coerced. The case was dismissed on remand in 2022 and 2023 without reaching that question.

The cross itself has not been to auction and carries no market price of its own; it has been German state property since 1935 and, since 2015, protected by name as nationally valuable cultural property. It is not currently on public display, having been withdrawn for a future permanent presentation of the Guelph Treasure whose date has not been set.

What it is

The Guelph Cross is small enough to be carried: 33.1 centimetres tall on its silver foot, 12.5 centimetres across the arms. The body of the cross is built up in cloisonne enamel on gold, using the cell-sunk (Senkschmelz) technique in which the enamel is set into cells cut down into a thickened gold ground rather than raised on applied gold walls - a Byzantine method that Lower Italian and Sicilian goldsmiths of the Norman period adopted and made their own. Gold filigree, niello and settings of gemstones and pearls cover the surface over a wood core, and the whole stands on a foot of cast, partially gilded silver.

At the lower end of the front face, a fragment of the True Cross is set behind a window of rock crystal, the standard medieval device for making a relic visible without exposing it to touch or the air. The reverse carries a nielloed inscription naming further relics held inside the object: pieces of the Apostles Peter and Mark, of John the Baptist, and of Saint Sebastian. A crucified Christ on the front face is flanked by half-length figures of the Virgin, John the Evangelist and the Archangel Michael. The object is not the work of a single moment: the small engolpion mounted above the main relic chamber is older than the rest of the cross, an eleventh-century pectoral cross of Byzantine character that was taken up and built into the larger reliquary rather than made for it.

A tomb built around a splinter of wood

The silver foot is not a plain stand. It carries figures the Kunstgewerbemuseum's own cataloguing describes as geniuses of death, shown with lowered, extinguished torches, together with a pillar read as a sign of victory - a pairing of motifs lifted from Roman funerary sculpture, where the inverted torch was a standard sign that a life had been put out. On a Roman sarcophagus that pairing marks a grave. Set beneath a reliquary that holds a fragment of the cross on which Christ died, the same pairing does the opposite work: it turns the object's base into a miniature tomb over which a sign of victory already stands, so that the foot itself argues, in a visual language borrowed wholesale from pagan funerary art, that this particular death was reversed. The museum's own published description names the result a reliquary grave, and no other reading of that combination of figures at the base of a True Cross reliquary has been proposed in the sources consulted.

This is not a hidden programme requiring a specialist to unlock it. Housing multiple relics in one portable object - an apostle here, a martyr there, John the Baptist, and the most prestigious relic of all set at the centre - was ordinary practice for a well-funded cathedral treasury wanting to concentrate as much sanctity as possible into objects that could be carried in procession or displayed on a major feast day. What is worth recording precisely, because it is documented in the object's own material rather than argued from resemblance, is that an older, already-holy object - the eleventh-century engolpion - was folded into the newer cross rather than discarded when the larger reliquary was made. Reusing an object already invested with relic status, instead of starting again with new material, was itself a way of transferring authority from the old object to the new one; this record treats that transfer as a documented fact about the object's construction, not as an argued claim about anyone's belief, because no source consulted records why the choice was made, only that it was made.

A treasury built up over three centuries

The Guelph Treasure did not arrive at Brunswick Cathedral as a single gift. Its founding donation came from Countess Gertrude of Brunswick and her husband, Count Liudolf, who had founded the church in 1030; when Liudolf died in 1038, Gertrude gave a portable altar and two reliquary crosses in his memory. Those three objects - now the Portable Altar of Countess Gertrude and its two accompanying crosses - are eleventh-century, Lower Saxon work, and they are not this object. All three are today in the Cleveland Museum of Art, having left the treasury by a different and undisputed route described below.

This cross is a later, separate addition to the same treasury, made a century or so after Gertrude's gift, in a different region, in a different technique, by a different and unnamed hand. Exactly when it joined the Brunswick collection, and through whose gift, is not documented in any source this record located; the treasury simply grew across the eleventh to fifteenth centuries as later members of the House of Guelph and the Brunswick chapter added further reliquaries, altars, crosses, monstrances and vessels, of which this cross is one. By the twentieth century the assembled treasury numbered 82 pieces.

A duke who needed the money

The House of Guelph had been trying to sell the treasure since the early 1920s, and it had nothing to do with who might eventually buy it. Ernest Augustus, Duke of Brunswick, had lost his throne in the 1918 revolution and was living at Gmunden in Austria; the Guelph Treasure was one of the family's few remaining large assets. Robert Langton Douglas of the National Gallery of Ireland inspected it in 1921 and judged the asking price too high; Duveen Brothers negotiated on and off through the 1920s and walked away in 1927 when the Domed Reliquary alone was priced at USD 1 million, which the firm's own correspondence called ridiculous. The Metropolitan Museum of Art was approached by December 1927 and its own applied-arts director, Joseph Breck, described the ten-to-twelve-million-dollar asking price for the whole treasure as obviously absurd. The Victoria and Albert Museum negotiated from 1928 and was offered the whole collection for as little as 527,000 pounds sterling by September 1928, and still declined. Austria considered a state purchase option and let it lapse in January 1930. The German Reich, the Prussian state, and the city and province of Hannover were all separately approached in 1927 to 1929 and all declined, Hannover on the explicit ground that a municipal government could not make such a purchase in hard economic times.

Every one of these approaches predates any Nazi involvement by years; the party under financial pressure throughout was the House of Guelph, not the eventual buyers. On 5 October 1929, having failed to place the collection with a museum, a government, or a single wealthy buyer, the House of Guelph's Supreme Administration sold the entire 82-piece treasure to a consortium of three Frankfurt antiquities dealerships - J. & S. Goldschmidt, Z.M. Hackenbroch, and J. Rosenbaum - for 7.5 million Reichsmarks, payable in four instalments over twelve months, with a clause returning to the House of Guelph any resale profit above that price. The named individuals behind the three firms were Julius Goldschmidt, Zacharias M. Hackenbroch, Isaak Rosenbaum, and Saemy Rosenberg. Three weeks later the Wall Street Crash began the collapse of the market the consortium had just bought into.

Half a treasure crosses the Atlantic

The consortium spent the next two years trying to recover its outlay in a market that had just fallen apart under it. An eight-week sales exhibition at the Stadel Art Institute in Frankfurt ran from August to September 1930, accompanied by a lavish 200-page catalogue with gold-stamped etchings and a morocco leather cover, compiled by the museum directors Otto von Falke, Robert Schmidt and Georg Swarzenski. A Berlin exhibition followed in October 1930. The unsold 64 pieces were then shipped via Rotterdam to the United States for a six-city tour: New York's Goldschmidt and Reinhardt Galleries, the Cleveland Museum of Art, the Detroit Institute of Arts, the Pennsylvania Museum of Art in Philadelphia, the Art Institute of Chicago, and San Francisco's M. H. de Young Memorial Museum, running from late November 1930 into December 1931.

American buyers took roughly half the remaining treasure. William M. Milliken, curator and later director of the Cleveland Museum of Art, personally bought six pieces for his own house for USD 259,500 in 1930; the museum itself separately secured the Portable Altar of Countess Gertrude and its two accompanying eleventh-century crosses - Gertrude's own founding gift to the treasury - for USD 320,000 in 1931, receiving a monstrance as a further inducement and returning one previously acquired object in part payment. In Chicago, Marion Chauncey McCormick bought the Reliquary Cross with the Arms of the Veltheim Family and three further pieces through Goldschmidt, and Kate S. Buckingham bought two monstrances the same way; the Antiquarian Society acquired a cross through Rosenbaum. The Nelson-Atkins Museum of Art in Kansas City bought a reliquary monstrance holding a relic of Saint John the Baptist from J. & S. Goldschmidt in 1931 - a scientific study long afterward dated the bone inside it to 660-770 AD, several centuries before the reliquary itself was made, which is a separate and unrelated finding about that object rather than this one. The Fogg Art Museum at Harvard, the Focke-Museum in Bremen, and a number of private collectors in Germany, Sweden, Britain and the United States bought smaller pieces the same way.

This cross was not among them. Julius Goldschmidt offered it directly to the Metropolitan Museum during the New York exhibition in December 1930, at USD 280,000; Joseph Breck told the Museum's purchasing committee it was one of the most important pieces still available. No purchase was made, and no further negotiation over it is recorded. It is the dividing line in this object's history that matters here: every one of the pieces named in this section left the consortium's hands in an ordinary, undisputed market transaction completed in 1930 or 1931, years before the Nazi seizure of power in January 1933 and entirely unconnected to it. This cross did not sell, and so it remained with the consortium as one of the pieces still on hand when the political situation in Germany changed.

The Reich takes an interest

Little sales activity is documented for 1931 to 1933. It resumes in November 1933, ten months after the Nazi seizure of power, when Georg Swarzenski drew the Frankfurt Lord Mayor Friedrich Krebs's attention to the remaining treasure; Krebs took the matter to the Reich Chancellery, framing the proposed purchase as a way of restoring German national honour and reporting that the greater part of the Guelph Treasure had already gone to the Cleveland museum and that the rest could now be bought at about a third of its earlier value. The Chancellery said it had no funds and passed the matter to the Ministry of the Interior, which passed it on again with a negative recommendation.

A second approach followed the same month: Adolf Feulner, director of the Frankfurt Museum of Applied Arts, wrote to Friedrich Schmidt-Ott of the Association for the Promotion of Sciences and Humanities, who replied that it would be very welcome if the Prussian state could now make amends for the mistakes of the previous government in having rejected the purchase back in 1930. That framing is worth recording exactly as it appears in the archive: the impulse driving the renewed interest, in the words of the officials involved, was to correct an earlier missed opportunity to keep a national treasure in Germany, not, at this stage, anything to do with the sellers' religion. The political tone changed by mid-1934. A memorandum drafted at the instigation of a Prussian ministerial director in July 1934 argued that once Prussia was absorbed into the Reich it would be positioned to bring the historically, artistically and nationally-politically valuable Guelph Treasure into the Reich alongside other treasures - language that frames the acquisition explicitly as a matter of national prestige. In the same period, after consultation with Hermann Goering, then Prussian Minister-President, a plan was floated to place a straw-man bidder in the negotiations to keep the price down, with the real buyer's identity concealed. The Prussian Cultural Heritage Foundation's own account of the archival record states plainly that this plan was never put into action, and that it found no evidence Goering was personally involved in the negotiations that actually took place.

What 4.25 million Reichsmarks bought

From January 1934 the negotiations were run by Theodor Stern, a director of Dresdner Bank, acting for the Prussian State, through an intermediary, Alfons Heilbronner, an art dealer heavily indebted to the same bank. Stern knew the consortium's original 1929 outlay had been RM 7.5 million and that it had recovered only around RM 1.5 million from sales since. His stated strategy, recorded in his own internal notes, was never to make the first offer and to let the seller name a figure first, precisely so as not to drive the price up. Reports reaching him through Heilbronner in 1934 put the consortium's minimum at RM 6 to 6.5 million; a museum expert's own internal assessment thought even a state offer of RM 3.5 million would be cheap. Dresdner Bank's first formal bid, on 10 April 1935, was RM 3.7 million. Saemy Rosenberg, described in the bank's own records as leader of the owner consortium, countered on 26 April with RM 4.35 million net. The bank asked for time to consider so wide a spread; the Reich Finance Minister proposed trimming RM 250,000 to offset an anticipated import sales tax; the consortium's final counter-offer, RM 4.25 million, was accepted.

The contract was signed on 14 June 1935 between Dresdner Bank, representing the Prussian State, and the consortium firms and individuals, for the 42 pieces still unsold, this cross among them. The purchase price was split three ways: RM 100,000 as a broker's commission, RM 3,371,875 paid to the Hackenbroch firm, and RM 778,125 credited to a blocked Reichsmark account in Saemy Rosenberg's name. That last figure is the one this record flags for particular attention. Germany's currency-exchange controls, in force since 1931, meant the portion of the price owed to the consortium's foreign members could not simply be paid out as usable cash; instead it sat in a blocked account that Rosenberg could spend, within four weeks, only on works of art bought either on the open market or from the inventories of the Prussian state museums themselves, under a price-setting mechanism the contract also specified. Dresdner Bank's own negotiators agreed to guarantee the foreign sellers free disposal of the resulting artworks and to absorb the risk of any loss on their resale, which is the bank's own account of how it cushioned an otherwise restrictive mechanism - but the mechanism itself, a state-controlled conversion of part of the price into art rather than currency, is exactly the kind of below-the-surface constraint that the plain headline figure of RM 4.25 million does not show. The state museums duly gave up two paintings, six sculpture-division pieces, and twelve pieces from the Berlin Palace Museum's own holdings to fund this part of the deal, over the recorded objection of at least two museum department heads who did not want to part with a Lancret painting from the Frederick the Great collection or a prized Islamic silk animal carpet bought by Wilhelm von Bode in 1894. Those substitute pieces went on to disperse across four further decades and three continents - one, a Verrocchio bronze candelabra, reached the Rijksmuseum by way of the Amsterdam banker Fritz Mannheimer; another, a fifteenth-century bronze then attributed to Bertoldo, passed through a Vienna collection to the Museum Boymans-van Beuningen in Rotterdam only in 1994; a fourth was sold outright to the Metropolitan Museum for USD 75,000 and remains there.

Who actually held the stakes

The consortium was never a fixed group of four men. By the time of the 1935 sale, documented stakes included a 25 per cent share held by Hermann Netter, co-owner of the Robert Koch jewellery dealership - a tax-audit record shows he received exactly RM 1 million for that quarter-share in July 1935 - and a further 2.5 per cent held through an Amsterdam subsidiary of the Goldschmidt firm, and another 2.5 per cent by Heilbronner himself. Indications, without a documented percentage, point to a stake held by the Mendelssohn & Co. banking house or its principal, Fritz Mannheimer, and to unspecified British participation, of which only the dealership S. J. Phillips is named; the banker Willy Dreyfus and the dealerships A. S. Drey of Munich and J. Gluckselig & Sohn of Vienna are also documented as involved. Hackenbroch and Rosenberg had themselves sold down parts of their original holdings to Goldschmidt over the years - Hackenbroch had borrowed against a twentieth share as early as December 1929 and held only a fortieth by 1935. None of this changes who owned the treasure in law, but it means the plain phrase the consortium obscures a shifting group of German and foreign dealers, bankers and investors whose individual circumstances in 1935 are, for the most part, not documented in the sources this record consulted.

Two claims, one commission

No dispute was raised for over seventy years. In 2008, heirs of the four consortium principals filed a claim for the treasure's return with the Prussian Cultural Heritage Foundation (SPK), the public body that had inherited the Prussian state museums' holdings after the war. Their case, as later set out in US court filings, was that the 1935 transaction was a forced sale in substance if not in form: that the Nazi state's antisemitic economic policy, the boycott and exclusion of Jewish-owned businesses, and the resulting collapse of the market specifically for art in Jewish dealers' hands left the consortium no real choice but to accept whatever the Prussian State offered, however the paperwork was drawn up.

Germany's Advisory Commission on the return of cultural property seized as a result of Nazi persecution, chaired by Professor Dr. Jutta Limbach and commonly called the Limbach Commission, examined the claim on the basis of the SPK's own detailed historical account, and on 20 March 2014 recommended against restitution. In the SPK's own words, its conclusion was that the purchase price could be deemed adequate given the then-prevailing economic crisis and market situation, and that the consortium and the individuals behind it had had free disposal of that price once received; contemporary press coverage of the recommendation quoted the Commission's finding that, far from selling under duress, the consortium had been trying to unload the treasure for years, and that there was no indication the dealers were pressured in the negotiations themselves, for instance by Goering. The heirs did not accept that conclusion and continued to press their claim, now in the United States.

It is worth stating plainly what this record found and did not find. The SPK's detailed factual account, which this record draws on extensively above, is the institution's own submission, made in its own interest as the party resisting the claim; it is also, on its face, a heavily documented, archive-referenced account, and the Limbach Commission's public recommendation adopted its central conclusions. This record located no independently published, line-by-line statement of the Commission's own reasoning beyond the SPK's account and press summaries of the recommendation; a reader who needs the Commission's reasoning in a form independent of the party that supplied the underlying facts will need to consult the Commission's own file, which this record's research could not obtain.

A jurisdictional ruling, not a verdict on 1935

Having lost before the Commission, the heirs - Alan Philipp, Gerald G. Stiebel and Jed R. Leiber - sued Germany and the SPK in the United States District Court for the District of Columbia in February 2015, invoking the expropriation exception to the Foreign Sovereign Immunities Act, which allows a foreign state to be sued in US courts over property taken in violation of international law. The district court and, on appeal, the DC Circuit both denied Germany's motion to dismiss, rejecting Germany's separate argument that international comity required deference to the Advisory Commission's recommendation or exhaustion of German remedies first.

Germany appealed to the US Supreme Court, which decided the case, Federal Republic of Germany v. Philipp, unanimously on 3 February 2021. The Court's holding was narrow and procedural: Chief Justice Roberts wrote that the FSIA's expropriation exception incorporates what is called the domestic takings rule, under which a sovereign state's taking of its own nationals' property is not, for purposes of that US statute, a taking in violation of international law - regardless of how the taking is otherwise judged. The Court did not decide, and was not asked to decide, whether the 1935 sale of the Guelph Treasure was in fact coerced; it decided only that US courts generally lack jurisdiction under the FSIA over a foreign state's dealings with its own nationals' property, and it sent the case back to the lower courts to consider the heirs' further argument that the consortium members should not be treated as German nationals in 1935, given their legal and social exclusion as Jews under the Nazi state.

On remand, the district court dismissed the case on 25 August 2022, holding that the heirs had not pleaded specific enough facts to establish that the dealers were not German nationals at the time of the sale - general allegations about the treatment of Jews under the Nazi regime were not, in the court's view, sufficient on their own. The DC Circuit Court of Appeals affirmed that dismissal on 17 July 2023. At no point in this sequence, from the original 2015 filing through the 2023 appellate decision, did any US court rule on whether the 1935 transaction was in substance forced; every ruling turned on jurisdiction and on how the heirs had pleaded the nationality question, not on the facts of the sale itself. Conflating the case's dismissal with a finding that the sale was legitimate would misstate what the courts actually decided.

Protected, and currently off view

Two weeks after the Limbach Commission's March 2014 recommendation, Germany opened a registration procedure to list the Guelph Cross, by name, as nationally valuable cultural property under its cultural property protection law; the listing was finalised on 10 February 2015. That status does not resolve the ownership dispute - the heirs continued to litigate in the United States for another eight years after the listing - but it does mean that, whatever happens to the underlying claim, the object cannot now leave Germany without triggering the full apparatus of national cultural-property export control, a protection the state extended to the object within weeks of winning the argument that it was entitled to keep it.

As of this record's research, the Kunstgewerbemuseum's own published information states that the Guelph Treasure, including this cross, is not currently on public display: the objects have been withdrawn from their previous presentation at the Kulturforum in Berlin in preparation for a new permanent installation, whose opening has not been announced. A reader relying on older descriptions of the treasure's display location should treat them as superseded until that new presentation opens.