Breguet No. 160, the Marie-Antoinette

Abraham-Louis Breguet died in Paris on 17 September 1823. Watch No. 160 was completed in 1827. Everything that follows in this record is written from that fact outwards, because almost nothing written about this object anywhere else begins there.

The distinction is not pedantry and it is not a technicality about signatures. Breguet ran a house that outlived him by nearly two centuries and every stage of it signed objects Breguet: Breguet et Fils in his lifetime and after it, then Breguet Neveu et Compagnie, then Maison Breguet under Edward Brown from 1870, then the modern company under Chaumet, Investcorp and the Swatch Group. All of them are genuinely Breguet. Only the first is Breguet's own work, and the test is a date, not a name on a dial.

No. 160 sits on the wrong side of that date. The order is his, taken in his workshop on the Quai de l'Horloge in 1783. The design is his, and so is the decision to accept a commission with no ceiling on cost or time. The finished object was assembled and delivered by his son. A record that calls this watch Breguet's masterpiece has quietly moved four years of somebody else's work onto a dead man's account.

The order was placed in 1783. The house record identifies the client only as an officer of the Queen's Guard and no source consulted here supplies a name from the register. The instruction was threefold: build into one watch every complication then known; substitute gold for other metals throughout wherever substitution was possible; and accept no limit on the time taken or the price charged.

Quill and Pad puts the last clause plainly: neither a delivery date nor a price was fixed, meaning that the watchmaker was basically granted carte blanche. That sentence is the whole explanation of the object. A commission with no ceiling on either axis is the only kind that can run for forty-four years without being cancelled, and it is also the only kind that can outlive both the client's cause and the maker.

The watch is called the Marie-Antoinette on the strength of that intention. She did not order it, did not pay for it, never saw it and had been dead for thirty-four years when it was finished.

The version repeated in almost every account is that the officer was Count Hans Axel von Fersen the Younger, the Swedish soldier attached to the Queen and the subject of a long-running attachment story. Quill and Pad names him. It is not the same thing as an archival identification, and the sources that name Fersen and the sources that say the name is unknown are both in wide circulation.

The candidates on the record are four: an unnamed officer of the Queen's Guard, which is the holding museum's own position and the wording used by the Breguet house's own Notice of 1887; Fersen; an anonymous admirer, which is the formulation used by The Naked Watchmaker; and the naval minister the Marechal de Castries. The name was withheld from the records at the time, which is itself a fact about the commission rather than a gap in the paperwork.

Two further pieces of evidence bear on it. A specialist publication issued a formal correction in December 2024 clarifying that the Marie-Antoinette connection is legend rather than period documentation. And a researcher has traced the Marie-Antoinette attribution itself back to Sir David Salomons, whose own source appears to have been a dealer's shop-window label of about 1920 to 1921. If that chain holds, the name by which the most famous watch in the world is known was attached to it by a shopkeeper a hundred and forty years after the order was placed.

As built it is the most complicated watch of its century. It carries a minute repeater; a perpetual calendar giving the day of the week, the date, the month and the leap-year cycle; equation of time; a power reserve indication; a metallic thermometer; an independent centre seconds usable as a stopwatch, with no reset; a small seconds; and self-winding by an oscillating weight, which is what the word perpetuelle means in this house's vocabulary and what English-language descriptions almost invariably confuse with the perpetual calendar.

The materials are the second half of the specification. Plates, bridges and wheels are gold. The balance spring is gold. The bearings are sapphire. The dial is white enamel with a second dial in transparent rock crystal, and the front and back crystals are rock crystal rather than glass. It carries a double pare-chute, the shock-absorbing suspension for the balance staff that was Breguet's own invention.

Every one of those decisions is expensive and only some of them are improvements.

The 1783 order specified that gold should replace other metals throughout wherever it could be substituted, and the watch as built obeys it into places a client would never see. Gold plates and bridges are display. A gold balance spring is not.

The balance spring governs the rate of the watch. Its elasticity is the property the whole instrument depends on, and it is the one component in a timekeeper where the choice of material is a decision about accuracy rather than about appearance. Specifying gold there is a patron dictating a functional choice for reasons that have nothing to do with function, and it is the clearest surviving instance in the Breguet corpus of a client overriding a maker on a technical question.

Structural gold of this kind is otherwise rare in the corpus. Where it appears it should be read as evidence of a specific instruction rather than as house practice.

The build ran from the last years of the Bourbon monarchy to the reign of Charles X. Work is recorded as having been interrupted by the Revolution and by Breguet's own flight from Paris: he left on 3 June 1793 for Switzerland, going by way of Geneva to Neuchatel and Le Locle, and returned in 1795 to recover the workshop. The Breguet house's own Notice of 1887 records the work as stopped from 1789 to 1795.

Marie-Antoinette was executed on 16 October 1793, four months after Breguet left Paris. The records of the workshop for 1775 to 1787 were destroyed in the Terror in 1794, which is why the earliest years of this commission cannot be documented from the firm's own books at all.

The registers pick the object up again decades later. Michel Weber is recorded working 725 hours on No. 160 between 1812 and 1815, at a cost of 7,250 francs. Breguet died in 1823. The watch was completed in 1827 under the direction of his eldest son Antoine-Louis Breguet, forty-four years after the order was taken.

Breguet ran a house, not a bench. Work was subcontracted to named outworkers under a system the trade calls etablissage, and the Breguet production registers record who those workers were, which is more than almost any comparable maker of the period offers.

On No. 160 the register credits the base movement to a maker recorded as Prudhomme, and 725 hours of work between 1812 and 1815 to Michel Weber at a cost of 7,250 francs. That is ten francs an hour, and it is the rarest kind of figure in decorative arts research: a labour cost attached to a named hand on a surviving object.

It also creates a conflict that no source consulted resolves. Salomons reports Breguet saying that he could find only fifteen to twenty workmen in Paris capable of carrying out his work properly, and that no man received less than twenty francs a day. Ten francs an hour is far more than twenty francs a day at any ordinary working day. One figure may be a day rate for employed hands and the other a piece price including materials or overhead. Neither is adjusted here.

Nothing further is established about Prudhomme. Who he was, and what else he supplied to the house, is an open question on the most-described watch in the world.

The date this watch was finished is not settled, and the disagreement is not between a good source and a bad one. It is between three parties who all have standing.

The modern firm and the horological trade give 1827, under Antoine-Louis Breguet. The holding museum gives 1820, which is inside Abraham-Louis Breguet's lifetime. The Breguet house's own Notice dated 24 October 1887, printed by Sir David Salomons in his 1921 catalogue, gives 1802, with the work stopped from 1789 to 1795 and the factory costs at 30,000 francs.

This record adopts 1827, because it is the date given by the party that holds the archive today and it is the date the trade uses, and it prints the other two rather than suppressing them. Two points follow. The 1802 date is not an encyclopaedia error to be swept away: it descends from a Breguet document, and any correction that dismisses it as a Wikipedia mistake has itself made a mistake. And on two of the three dates the object was finished by somebody other than Abraham-Louis Breguet, so the posthumous reading of this watch does not depend on choosing 1827.

Four numbers are in circulation for the cost of building No. 160 and they cannot be reconciled from the material consulted here. Quill and Pad gives 16,864 francs as the total. A figure of 17,070 francs is reported as the ledger total. The firm gives 17,000 francs as labour alone. The Breguet house Notice of 24 October 1887 calls the factory costs 30,000 francs.

All four are printed here and none is averaged. What can be said with confidence is the shape: this was an object whose build cost ran to five figures in francs at a time when the same house was selling its standardised souscription watch by subscription at 600 livres with a quarter paid in advance, and when the watch Marie-Antoinette actually bought from Breguet in 1792 cost 960 francs. The commission cost between seventeen and thirty times what the queen herself spent on a Breguet.

A reader should treat any modern currency equivalent for these figures with suspicion. The methods used to convert an early nineteenth-century franc differ by an order of magnitude between a retail price index, an average earnings measure and a share of national income, and no source consulted here states which method it used.

The house kept the watch. There is no delivery to the client of 1783, for the obvious reason that a commission taken in the last years of the ancien regime and finished under the Restoration had no client left to deliver it to.

The first owner in the record appears in the repair books. On 11 March 1838 the Marquis de La Groye of Provins is recorded bringing in his perpetuelle repeating watch No. 160 for servicing. The Marquis had died without issue on 4 October 1837, five months earlier. Either the house booked the piece under its known owner's name after his death or a date in the books is wrong, and either way it is the clearest published demonstration that the Breguet registers are working business books that carry business errors.

How the watch passed from the Marquis, or from whoever held it in 1838, back into the possession of the house is not established. By 1887 the firm had it: in that year Madame Breguet sold No. 160 to Sir Spencer Brunton for 600 pounds, sixty years after it was finished. It passed to Brunton's brother, then to the dealer and collector Murray Marks, and from Marks to Sir David Lionel Salomons, second baronet, in a chain that includes a Christie's sale of 22 June 1896. The same source gives 1896 in its narrative and 1918 in its own ownership table, and the two are incompatible.

Salomons assembled roughly 124 Breguet pieces. On his death in 1925 the collection passed to his daughter Vera Bryce Salomons, who left it to the museum she founded in Jerusalem in memory of the orientalist Leo Ary Mayer. The watches arrived there in 1974.

On the night of 15 to 16 April 1983 a single burglar entered the L. A. Mayer Museum for Islamic Art and removed 106 clocks and watches, No. 160 among them. It remains the largest theft of horology on record.

The method depended entirely on institutional failure. The museum's alarm was inoperative. The guard's round was predictable. The thief bent the metal bars of a small window with hand tools, dismantled the larger pieces so that they would pass through the opening, and loaded them into a waiting vehicle. There was no forced main entry, no confrontation and no witness.

The date is reported inconsistently and the inconsistency is worth carrying rather than smoothing. The night of 15 to 16 April 1983 is the form given by the reference literature; 17 April 1983 is the date given in the English Wikipedia entry on the watch; 16 April also appears. A burglary that begins on one night and is discovered the next morning generates exactly this spread.

The thief was Naaman Diller, an Israeli burglar and former air force pilot with a long record, including a Tel Aviv bank robbery in 1967 carried out with an improvised oxygen pipeline for a cutting torch. He was not identified as the culprit for twenty-three years. He sold three of the 106 pieces and kept the rest, distributed among safe deposit boxes in Israel, Europe and the United States. Several were later found with his own handwritten notes and diagrams explaining how to dismantle, wind, oil and set them. Whatever the motive was, it was not liquidity.

Diller died of cancer in 2004. Before his death he told his wife, Nili Shamrat, an Israeli living in Los Angeles, what he had done and where the objects were.

In August 2006 a lawyer acting for an unnamed woman approached the museum and arranged the return of a first group of pieces, No. 160 among them. The sum paid is reported as roughly 35,000 dollars in one account and about 40,000 in another. The size of that first tranche is given as 39 objects in the reference literature. The transaction was framed as a recovery rather than a ransom, and the anonymity was part of the arrangement. The recovery became public in late 2007; The Naked Watchmaker gives December 2007, and Quill and Pad places the return to the museum in 2008. A further group of 43 watches and clocks was located in France and returned afterwards. The commonly cited total is 96 of the 106 stolen objects, which leaves ten still missing.

Three things about this case are usually softened and should not be. The watch came back intact and in running order, not as parts. Nobody was prosecuted for the burglary: the thief was dead, and the investigation that identified his widow did so after the objects had already been returned by agreement; Shamrat was subsequently given five years probation for receiving stolen goods. And the recovery was not a police triumph. It was the consequence of a deathbed confession and a negotiated handover through a lawyer, and a museum paid money to get its own property back. That is the central fact of the case and it is uncomfortable.

The museum reopened its Salomons clock gallery in July 2009.

Figures of 30 million dollars are quoted for No. 160 in almost everything written about it. Wired used the figure in 2013; the coverage of the theft used it throughout.

The watch has never been offered at auction. It has never been sold on the open market at all: the only recorded transactions in its history are a private sale by the house at 600 pounds in 1887, an inheritance, a bequest, a theft and a negotiated return. The museum is not a seller. No auction result, insurance schedule, probate valuation, customs declaration or export valuation supporting the thirty million figure appears in any source consulted for this record.

It is an estimate of what an unsellable object might make, produced by writers rather than by valuers, and it should be labelled as that every time it is repeated. This record does not carry it in any price field.

In 2004 Nicolas G. Hayek, then head of the Swatch Group, which had bought Breguet in 1999, commissioned the modern firm to build a replica of No. 160. The original was still missing at the time. The replica was completed and presented in April 2008, after the original had been recovered, and it carries the number 1160.

It has 823 components. It reproduces the complication set, the gold plates and bridges, the gold balance spring and the rock crystal dials, and it carries a 48-hour power reserve indication. Its presentation case is made from the wood of an oak from the grounds of the Petit Trianon at Versailles. It is not for sale.

It is also, by a wide margin, the more photographed of the two objects. It has been exhibited and marketed since 2008 by the company that made it, while the original sits in a museum in Jerusalem, and the consequence is that a large proportion of the images captioned as the Marie-Antoinette watch are pictures of a watch made in the twenty-first century. For a few months in 2008 both objects existed and only one of them was old. Any catalogue entry, insurance schedule, news report or caption that says the Marie-Antoinette without a number has not identified an object.

No. 160 is at the L. A. Mayer Museum for Islamic Art in Jerusalem, in the Salomons collection galleries.

It travels rarely. It was shown in London in the Science Museum's exhibition Versailles: Science and Splendour, which ran to 21 April 2025, where the museum's own text described it as the world's most famous watch, designed for Marie Antoinette. That description is the naming problem this record exists to correct, reproduced by a national museum in an exhibition label, which is a measure of how firmly the legend has set.

The holding museum's own count of its Breguet material is itself unsettled: its Hebrew-language pages state 55 pieces and the reference literature has 57, against roughly 124 recorded in Salomons' hands. Around seventy objects are unaccounted for between the collector and the museum, before the ten never recovered from the 1983 theft are counted.