The number is US$6,503,500, and the first thing to say about it is what it is not. It is not what this watch is worth on the open market. On 11 December 2021, at Phillips New York, the first example of the Patek Philippe Nautilus ref. 5711/1A-018 — the Tiffany Blue edition — hammered at $5,350,000 and totalled $6,503,500 with buyer's premium, as Lot 1 of The 2021 New York Watch Auction, offered with an estimate of 'in excess of $50,000' and no reserve. Every dollar of the proceeds went to The Nature Conservancy. Bidders in that room were buying a watch and making a donation in the same paddle raise, and they knew it. This story keeps those two purchases separate, because the market already ran the control experiment.
The watch itself is stainless steel: 40 mm, integrated bracelet, self-winding calibre 26-330 S C with date — the same 5711 Patek Philippe had announced it was discontinuing in January 2021, the most wanted sports watch in the world in its farewell season. Two things make this reference a different object from every other 5711. The dial is lacquered in Tiffany Blue, the retailer's trademarked colour, and it is double-signed — Patek Philippe and Tiffany & Co. together — under a partnership that began in 1851.
The caseback carries the inscription '170th Anniversary 1851–2021.' The edition ran to 170 pieces, one for each year of the partnership, retailed at $52,635 through Tiffany boutiques in New York, Beverly Hills and San Francisco, and in practice went to the houses' most established clients. The total at Phillips is roughly 124 times that retail price.
Why the room paid it
Three documented forces stacked on one lot. Scarcity with a closed door: 170 pieces, a discontinued reference, allocation by relationship — the auction was the only public door into the edition, and everyone bidding knew the other 169 were already placed. The moment: December 2021 was the peak of the steel-sports-watch frenzy and the 5711's farewell season, and the sale was staged as an event, Lot 1, no reserve, in front of a global audience. And charity — the force that does the most work and transfers the least. The Nature Conservancy was designated as beneficiary under Tiffany's new owner, LVMH, and bidders could treat everything above retail as philanthropy with a watch attached. Charity lots routinely clear prices no market participant would pay the following month.
The control experiment
Strip the charity and the moment away and the same edition tells you what the market alone thinks. At Sotheby's Hong Kong on 5 April 2023, another example of the 5711/1A-018 sold in a regular commercial sale for HK$20,415,000 — about US$2.6 million, premium included, on a hammer of HK$16,500,000 against a HK$16–24 million estimate. Dealer asking prices for the edition have since been reported in the $200,000–$300,000 range in 2026 guide coverage — asks, not sales, and a further step down from the 2023 result.
So the honest ladder reads: $52,635 retail, then about $2.6 million at commercial auction in 2023, then $6,503,500 in the charity room in 2021. The edition is genuinely scarce and genuinely valuable — the 2023 sale proves that with no charity anywhere near it. But roughly $3.9 million of the 2021 total was the charity, the farewell moment and the theatre of Lot 1: money that belonged to that night and does not describe the watch's market value. For scale against the ordinary object, the standard blue-dial steel 5711/1A-010 retailed at about $34,890 before discontinuation. The Tiffany edition's retail premium over it was the dial and the signature. Everything above that is edition, access and occasion.
What happened after the hammer
The story has one more turn, documented by Hodinkee's follow-up reporting and stated here with its attribution on. The original winning bid did not complete. The watch was subsequently placed with one of the underbidders — a young collector named Zach Lu — at his final bid plus commission, approximately $6.2 million in total. Phillips confirmed to Hodinkee that The Nature Conservancy would still receive the original $6.5 million, and the Conservancy confirmed it received exactly that, directing the funds to five programmes: the Maya Forest in Belize, the Caribbean, Papua New Guinea, Borneo and Alaska's Tongass National Forest. The charity number survived the failed bid. The watch changed hands for less than the headline — which is, in miniature, the whole lesson of this story.
What the $6,503,500 included was one watch — the example held back for the charity sale — with its premium-inclusive total payable to the sale and its full proceeds directed to The Nature Conservancy. What it does not include is a valuation of the other 169 pieces, of this piece on any other day, or of the reference as a class. The 2023 Sotheby's result is the standing commercial counterexample, and it stays in this story next to the headline number, where it belongs.
Sources · 5 sources
- Phillips — lot record, ref. 5711/1A-018, The 2021 New York Watch Auction, 11 December 2021 ($6,503,500 total; $5,350,000 hammer; 170-piece edition; proceeds to The Nature Conservancy)
- Hodinkee, May 2022 — 'Where The Money Spent On The $6 Million Tiffany Blue Patek Nautilus 5711 Went' (failed winning bid; placement with underbidder Zach Lu at about $6.2M; TNC confirmed receipt of the full $6.5M and its five programme splits)
- Sotheby's / The Value — Hong Kong 50th Anniversary Luxury Evening Auction, 5 April 2023 (same edition: HK$20,415,000 total, HK$16,500,000 hammer, HK$16–24M estimate)
- Grailr Watch Intelligence, October 2026 — edition guide (retail $52,635; dealer asks $200,000–$300,000+)
- National Jeweler / Rapaport, December 2021 — sale-day corroboration (double signature, caseback inscription, proceeds designation)






