Ocean Biretrograde, Ref: OCEABI36-2, Purchased 23rd September 2016 — Harry Winston. An 18K rose gold and diamond set automatic calendar bracelet watch with mother of pearl dial

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Estimate: £15,000–£18,000 hammer ≈ $21,104–$25,325
Result
Performance
Sale: Bonhams — Watches and Wristwatches, London, Knightsbridge · 23 February 2021
Record ID: TB-2026-648182
Record: first seen 21 Jul 2026 · updated 22 Jul 2026 · source ↗
Cite this record: TB-2026-648182 — https://thebasis.art/cite/TB-2026-648182

Harry Winston. An 18k Rose Gold And Diamond Set Automatic Calendar Bracelet Watch With Mother Of Pearl Dial, Ocean Biretrograde, Ref: OCEABI36-2, Purchased 23rd September 2016. Bonhams, 23 Feb 2021, lot 81. result recorded. TheBasis.Art, TB-2026-648182.

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Harry Winston. An 18k Rose Gold And Diamond Set Automatic Calendar Bracelet Watch With Mother Of Pearl Dial, Ocean Biretrograde, Ref: OCEABI36-2, Purchased 23rd September 2016. Bonhams, 23 Feb 2021, lot 81. result recorded. TheBasis.Art, TB-2026-648182.

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From the same sale Watches and Wristwatches · Feb 2021

Lot	Artist	Estimate
Circa 1900	Lecoultre & Cie. A Miniature Continental Gold Keyless Wind Open Face Pocket Watch	£800–£1,200
Monza, Ref: 150.501, Circa 1975	Tag Heuer. A Stainless Steel Automatic Chronograph Calendar Wristwatch	£1,500–£2,000
Speedmaster, Ref: 145.012-67 SP, Circa 1967	Omega. A Stainless Steel Manual Wind Chronograph Bracelet Watch	£7,000–£9,000
GMT Master, Ref: 16753, Circa 1986	Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone	£7,000–£9,000
Explorer, Ref: 1002, Circa 1960	Rolex. A Stainless Steel Automatic Bracelet Watch	£4,000–£6,000
Gondolo, Ref: 4824, Purchased 10th November 2000	Patek Philippe. A Lady's 18k Gold Quartz Rectangular Wristwatch	£3,500–£4,500

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Patek Philippe. A Fine Stainless Steel Automatic Calendar Wristwatch	Aquanaut, Ref: 5066A-001, Sold 31st October 2005	$23,088	Bonhams, Dec 2019
Patek Philippe. An 18k Gold Manual Wind Wristwatch	Purchased 31st October, 1935		Bonhams, Oct 2024
Rolex. A Fine 18k White Gold Automatic Calendar Bracelet Watch	Submariner, Ref: 16618, Purchased 18th March, 2003		Bonhams, Jun 2025
Patek Philippe. An 18k Gold Manual Wind Wristwatch	Calatrava, Ref: 5022, Circa 2000		Bonhams, Feb 2022
Patek Philippe. A Fine Stainless Steel Automatic Calendar Wristwatch	Aquanaut, Ref: 5066/1A, Circa 2005		Bonhams, Dec 2020
Patek Philippe. An 18k Gold Manual Wind Wristwatch	Calatrava, Ref: 3919J-001, Circa 1995		Bonhams, Jun 2023
Patek Philippe. A Fine Stainless Steel Automatic Calendar Wristwatch	Aquanaut, Ref: 5066A-001, Purchased 13th March 2007		Bonhams, Feb 2021
Patek Philippe. An 18k Gold Manual Wind Wristwatch	Calatrava, Ref: 3919J-001, Purchased 5th July 2004		Bonhams, Feb 2023

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.