Circa 1930 — Cartier. A platinum and 18K gold keyless wind open face pocket watch

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Estimate: £2,000–£3,000 hammer ≈ $2,624–$3,936
Result
Performance
Sale: Bonhams — London Watches, London, Knightsbridge · 12 November 2025
Record ID: TB-2026-171635
Record: first seen 20 Jul 2026 · updated 20 Jul 2026 · source ↗
Cite this record: TB-2026-171635 — https://thebasis.art/cite/TB-2026-171635

Cartier. A Platinum And 18k Gold Keyless Wind Open Face Pocket Watch, Circa 1930. Bonhams, 12 Nov 2025, lot 14. bought in (did not sell). TheBasis.Art, TB-2026-171635.

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Cartier. A Platinum And 18k Gold Keyless Wind Open Face Pocket Watch, Circa 1930. Bonhams, 12 Nov 2025, lot 14. bought in (did not sell). TheBasis.Art, TB-2026-171635.

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From the same sale London Watches · Nov 2025

Lot	Artist	Estimate
Circa 1830	A Continental Gold Key Wind Open Face Quarter Repeating Pocket Watch	£2,000–£3,000
Circa 1850	D. Bachelard & Fils, Genève. A Gold Key Wind Open Face Wandering Hour Pocket Watch	£4,000–£6,000
Ref: 4823, Circa 1940	Movado. An 18k Gold Manual Wind Triple Calendar Wristwatch With Moon Phase	£1,200–£1,800
Cosmic, Ref: 2486-2, Circa 1947	Omega. A Gold Plated Manual Wind Triple Calendar Wristwatch With Moon Phase	£2,000–£3,000
Oyster Chronograph, Ref: 4500, Circa 1947	Rolex. A Fine And Rare 9k Gold Manual Wind Chronograph Wristwatch	£12,000–£18,000
Oysterdate Precision, Ref: 6066, Circa 1950	Rolex. A Stainless Steel Manual Wind Calendar Bracelet Watch With Star Dial	£5,000–£7,000

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Cartier. A Platinum And 18k Gold Keyless Wind Open Face Pocket Watch	Circa 1930	$5,151	Bonhams, Jan 2026
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Seamaster Planet Ocean 600M, Ref: 232.30.46.21.01.004, c. 20		Bonhams, Nov 2024
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Cartier. Montre bracelet en acier avec date mouvement automa		Bonhams, Jun 2026
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Cartier. Montre bracelet en acier avec date mouvement automa		Bonhams, Oct 2025
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Mark XV, Die Fliegeruhr, Ref: 3253, Purchased 24th June, 200		Bonhams, Jun 2023
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Mille Miglia GT XL, Ref: 8997, Circa 2010		Bonhams, Sep 2024
Vacheron Constantin. An 18k White Gold Manual Wind Wristwatch	c. 1960s		Bonhams, Dec 2025
Vacheron Constantin. An 18k White Gold Manual Wind Wristwatch	Circa 1935		Bonhams, Feb 2024

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.