The first stainless steel Patek Philippe 1518 broke its own auction record in Geneva last week, selling for $17.6 Million USD. The highest hammer price for a vintage Patek wristwatch, this piece eclipsed its previous hammer price in 2016 by nearly 30%.
Described as ‘genre-defining’ and a ‘unicorn’ of the watch world, this piece sold at Phillips Auctions. Why the record breaking price? This particular watch represented the rarest variation of the world’s first perpetual calendar chronograph wristwatch, as the first of only four steel versions produced.
The watch last appeared at auction in November 2016 at Phillips and was estimated in excess of 3,000,000 CHF which it nearly quadrupled. At the time it was the most expensive watch to sell at auction and the first to break the eight-figure barrier at CHF 11 million (11,002,000 CHF). It remains, to the present day, one of the most expensive Patek Philippe wristwatches ever sold.
Patek Philippe Reference 1518
The 1518 featured a manual wind Valjoux ébauche movement, modified by Patek Philippe and combined with a perpetual calendar module. Setting the design standard for future Patek Philippe calendar chronographs to follow, the dial was by Stern Frères, with day and date apertures to 12, subsidiary dials to 3 and 9, and a beautifully handpainted moonphase calendar dial to 6.
Only 281 pieces of the 1518 were ever produced from 1941 until 1954, with the majority cased in 18ct yellow gold, around 20% cased in 18ct pink gold, and only four known stainless steel cased examples. Stainless steel cased watches were not regularly produced by Patek Philippe until the 1970s, and prior to this point were often the result of client requests.
This example is the first of the steel 1518s, and is subsequently stamped ‘1’ alongside its case and movement number to the inside case back (508473 1). This example was manufactured in 1943, and according to its extract from the archives it was sold to a retailer in Budapest on February 22nd, 1944. According to Phillips, in 1944 the retail price for a steel reference 1518 was 2,265 Swiss Francs, only 500 Swiss Francs less than the gold version.
This example features in John Goldberger’s book, Patek Philippe Steel Watches, and is extensively covered over four pages. The significance of this watch cannot be understated, as Phillips have said “We can, without exaggeration, state that the present lot is quite possibly one, if not the most beautiful and important stainless steel wristwatch ever made by Patek Philippe.”
Indeed, the buyer of this 1518 clearly appreciated the value of this rarity and history. However, it would be remiss of us not to mention some of the pre-sale debate on the piece from collectors worldwide. Controversy over a number of details on the watch, such as the Patek Philippe recessed rather than raised logo, scattered marks to the dial, and the sizing of inside case markings have all been raised and debated by horological sleuth Perezscope amongst others. However, as Amrita Katara of Tatler points out:
“When only four examples exist, there’s no statistically meaningful population against which to compare details. Every idiosyncrasy becomes either “proof of uniqueness” or “evidence of restoration,” depending on who’s making the argument. Unlike more common references where collectors can cross-reference dozens or hundreds of examples to establish what’s “correct,” the steel 1518 exists in a category so rare that expertise itself becomes somewhat speculative.
Patek Philippe’s own archivists had confirmed the provenance of the piece and authenticity both in 2016 and ahead of the Phillips sale. The controversy clearly did not dispel bidding, with the opening bids shouted from the floor at “8 million” (CHF), rising all the way to CHF14,190,000.
1518 Sales Timeline
Owing to the numbers of the steel, pink and yellow gold cases produced – estimated at 4, 56, and 221 approximately, value and achieved prices vary primarily on rarity, with the steel achieving record prices, and the pink gold retaining a premium over the yellow gold as a rule. The below timeline can help us to contextualise the (ever increasing) results!
November 2016:
The ref. 1518 (508473 1) sells at Philips for CHF 11 million, breaking records as the first watch to surpass eight figures at auction.
December 2021:
A pink gold ref 1518 with pink dial, dating to 1948, from the Estate of Prince Mohammed Tewfik A. Toussoun of Egypt. Sold for $9,570.900
June 2023:
Sotheby’s sold a pink gold ref. 1518 with on original bracelet dating to 1946 for $3,871,500
February 2025
The third steel 1518 (598475 3) was offered for sale privately by the Monaco Legend Group, and reported by Hodinkee to have the asking price of $20 million. It has since been sold in the “highest single private treaty sale,” price undisclosed.
June 2025:
A yellow gold version dating to 1951/3 sold at Phillips New York Watches Auction for $1,451,500.
November 2025:
A ‘pink on pink’ ref. 1518 sells at Philips for $4,432,000, one of fourteen known examples of this dial and case variation.
November 2025:
The ref. 1518 (508473 1) sells at Philips for $17,600,000, breaking records as the most expensive vintage Patek Philippe sold at auction, and the second most expensive vintage wristwatch sold at auction (behind Paul Newman’s Rolex Daytona).
To arrange a watch valuation of your own collection or other items, contact us on 01883 722736 or email us at [email protected].













