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

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Estimate: £1,500–£2,000 hammer ≈ $1,907–$2,543
Result
Performance
Sale: Bonhams — Watches and Wristwatches, London, Knightsbridge · 22 May 2024
Record ID: TB-2026-396499
Record: first seen 20 Jul 2026 · updated 22 Jul 2026 · source ↗
Cite this record: TB-2026-396499 — https://thebasis.art/cite/TB-2026-396499

Vacheron & Constantin. An 18k Gold Keyless Wind Open Face Pocket Watch Retailed By Mascort & Bonturi, Buenos-aires, Circa 1910. Bonhams, 22 May 2024, lot 47. result recorded. TheBasis.Art, TB-2026-396499.

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Vacheron & Constantin. An 18k Gold Keyless Wind Open Face Pocket Watch Retailed By Mascort & Bonturi, Buenos-aires, Circa 1910. Bonhams, 22 May 2024, lot 47. result recorded. TheBasis.Art, TB-2026-396499.

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From the same sale Watches and Wristwatches · May 2024

Lot	Artist	Estimate
Constellation, Circa 1965	Omega. An 18k Gold Automatic Calendar Bracelet Watch With Pie-pan Dial	£3,000–£4,000
Circa 1810	Vaucher Frères. An Unusual Continental Gold Key Wind Open Face Pocket Watch With Independent Centre Seconds	£1,200–£1,800
Circa 1840	Vacheron & Constantin. A 14k Gold Keyless Wind Open Face Pocket Watch	£1,000–£1,500
Circa 1903	Waltham. A 9k Gold Keyless Wind Full Hunter Pocket Watch	£1,500–£2,000
Navitimer, Ref: 806, Circa 1965	Breitling. A Stainless Steel Manual Wind Chronograph Wristwatch	£2,000–£3,000
Ref: 166.070, Circa 1970	Omega. An 18k Gold Automatic Calendar Wristwatch With Dial Featuring Prince Khalifa Bin Salman Al Khalifa, Prime Minister Of Bahrain	£2,000–£3,000

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Omega. A Stainless Steel Manual Wind Chronograph Bracelet Watch	Flightmaster, Ref: 145.013, Circa 1975	$3,288	Bonhams, Sep 2022
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 68240, Circa 1984		Bonhams, Nov 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: 6917, Purchased 12th December, 1969		Bonhams, Nov 2025
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: 69173, c. 1987		Bonhams, Nov 2024
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 69173, c. 1986		Bonhams, Dec 2025
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 69174, Purchased 23rd December 1992		Bonhams, Nov 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.