Circa 1910 — Vacheron & Constantin. An 18K gold keyless wind open face pocket watch retailed by Mascort & Bonturi, Buenos-Aires

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Estimate: £2,500–£3,000 hammer ≈ $3,156–$3,787
Result
Performance
Sale: Bonhams — Watches and Wristwatches, London, Knightsbridge · 21 February 2024
Record ID: TB-2026-396661
Record: first seen 20 Jul 2026 · updated 22 Jul 2026 · source ↗
Cite this record: TB-2026-396661 — https://thebasis.art/cite/TB-2026-396661

Vacheron & Constantin. An 18k Gold Keyless Wind Open Face Pocket Watch Retailed By Mascort & Bonturi, Buenos-aires, Circa 1910. Bonhams, 21 Feb 2024, lot 36. bought in (did not sell). TheBasis.Art, TB-2026-396661.

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Vacheron & Constantin. An 18k Gold Keyless Wind Open Face Pocket Watch Retailed By Mascort & Bonturi, Buenos-aires, Circa 1910. Bonhams, 21 Feb 2024, lot 36. bought in (did not sell). TheBasis.Art, TB-2026-396661.

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From the same sale Watches and Wristwatches · Feb 2024

Lot	Artist	Estimate
Chester Hallmark for 1892	Joseph Penlington, 14 Oxton Road, Birkenhead. An 18k Gold Key Wind Open Face Pocket Watch	£2,000–£2,500
Circa 1909	Henry Moser & Co. A 14k Gold Keyless Wind Full Hunter Pocket Watch	£2,000–£2,500
Circa 1924	International Watch Co, Schaffhausen. A 14k Gold Open Face Keyless Wind Pocket Watch	£800–£1,200
'Dirty Dozen', Circa 1940	Jaeger-lecoultre. A Chrome Plated Stainless Steel Manual Wind Military Issue Wristwatch	£2,000–£3,000
Circa 1940	Vacheron Constantin. An 18k White Gold Manual Wind Wristwatch	£1,500–£2,000
Oyster, Ref: 6246, Circa 1955	Rolex. A Stainless Steel Manual Wind Wristwatch	£1,500–£2,000

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Vacheron & Constantin. An 18k Gold Keyless Wind Open Face Pocket Watch Retailed By Mascort & Bonturi, Buenos-aires	Circa 1910	$3,255	Bonhams, May 2024
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 68240, Circa 1984		Bonhams, Nov 2025
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 6917, Purchased 12th December, 1969		Bonhams, Nov 2025
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 69173, c. 1986		Bonhams, Dec 2025
Omega. An 18k Gold Automatic Calendar Bracelet Watch	Ref: 13431 A6, Circa 1970		Bonhams, Feb 2020
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 16233/16200, Circa 1988		Bonhams, May 2022
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Date, Ref: 69173, Circa 1984		Bonhams, Apr 2023
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 116203, Circa 2004		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.