Ellipse, Ref: 3605-1, Circa 1970 — Patek Philippe. An 18K white gold automatic oval calendar bracelet watch with sigma dial

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Estimate: £8,000–£12,000 hammer ≈ $9,379–$14,068
Result
Performance
Sale: Bonhams — Watches and Wristwatches, London, Knightsbridge · 13 September 2022
Record ID: TB-2026-543023
Record: first seen 21 Jul 2026 · updated 22 Jul 2026 · source ↗
Cite this record: TB-2026-543023 — https://thebasis.art/cite/TB-2026-543023

Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial, Ellipse, Ref: 3605-1, Circa 1970. Bonhams, 13 Sep 2022, lot 172. result recorded. TheBasis.Art, TB-2026-543023.

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Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial, Ellipse, Ref: 3605-1, Circa 1970. Bonhams, 13 Sep 2022, lot 172. result recorded. TheBasis.Art, TB-2026-543023.

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From the same sale Watches and Wristwatches · Sep 2022

Lot	Artist	Estimate	Result
Ref: 7010 033, Circa 1970	A 9k Gold Keyless Wind Open Face Pocket Watch	£1,200–£1,500
Visodate Seastar Seven, Circa 1960	Tissot. A Stainless Steel Manual Wind Wristwatch Retailed By Türler	£500–£700
Circa 1945	Vacheron & Constantin. An 18k Rose Gold Manual Wind Rectangular Wristwatch	£2,000–£3,000
Ref: 734, Circa 1952	Breitling. An 18k Gold Manual Wind Chronograph Wristwatch	£2,000–£3,000	upcoming
Ref: 2910-4 SC, Circa 1960	Rolex. A Stainless Steel Manual Wind Wristwatch	£500–£700
London Import mark for 1961	Boucheron. A Lady's 18k Gold Manual Wind Wristwatch With Interchangeable Bracelet	£2,500–£3,500

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial	Ellipse, Ref: 3604/2, Purchased 5th September 1975	$18,518	Bonhams, Feb 2023
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Single Red Submariner, Ref: 1680, Purchased 1975		Bonhams, Apr 2023
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Single Red Submariner, Ref: 1680, Circa 1971		Bonhams, Sep 2025
Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone	Explorer II, Ref: 1655, Purchased 23rd June 1984		Bonhams, Dec 2020
Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial	Calatrava, Ref: 3445/6, Manufactured 1971, Purchased Septemb		Bonhams, Feb 2024
Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial	Gondolo, Ref: 5030/22J-001, Purchased 20th December 2000		Bonhams, Jun 2022
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Double Red Sea Dweller, Ref: 1665, Circa 1970		Bonhams, Dec 2020
Omega. A Stainless Steel Manual Wind Chronograph Bracelet Watch	Oyster 'Monoblocco', Ref: 3525, Circa 1940		Bonhams, Jun 2021

The closest sold results by price, artist, and medium — the appraiser's comp set, generated from the corpus. All figures converted to USD at current reference rates.