Circa 1910 — Le Roy et Fils. A lady's continental gold and diamond set manual wind cocktail watch with blue guilloché enamel dial

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Estimate: £500–£700 hammer ≈ $663–$928
Result: upcoming — 17 November 2020
Performance
Sale: Bonhams — Watches and Wristwatches, London, Knightsbridge · 17 November 2020
Record ID: TB-2026-710544
Record: first seen 21 Jul 2026 · updated 22 Jul 2026 · source ↗
Cite this record: TB-2026-710544 — https://thebasis.art/cite/TB-2026-710544

Le Roy Et Fils. A Lady's Continental Gold And Diamond Set Manual Wind Cocktail Watch With Blue Guilloché Enamel Dial, Circa 1910. Bonhams, 17 Nov 2020, lot 57. estimate £500–£700, unsold at time of record. TheBasis.Art, TB-2026-710544.

Sell probability TheBasis model · trained on recorded passes

71% chance this lot finds a buyer · market base rate 72%

Of the 92,019 held-out lots the model scored about 72%, 69% sold.

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Le Roy Et Fils. A Lady's Continental Gold And Diamond Set Manual Wind Cocktail Watch With Blue Guilloché Enamel Dial, Circa 1910. Bonhams, 17 Nov 2020, lot 57. estimate £500–£700, unsold at time of record. TheBasis.Art, TB-2026-710544.

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From the same sale Watches and Wristwatches · Nov 2020

Lot	Artist	Estimate
Circa 1800	J. F. Bautte & Cie, A Paris. A Continental Gold Key Wind Open Face Pocket Watch With Enamel Decoration	£500–£700
Circa 1850	Jules Jürgenson, Copenhagen. A Fine And Rare United States Presidential Presentation 18k Gold Key Wind Full Hunter Pocket Watch	£8,000–£12,000
Gondolo, Circa 1915	Patek Philippe. An 18k Gold Keyless Wind Open Face Pocket Watch Retailed By Relojoaria Gondolo, Rio De Janeiro	£1,500–£2,000
Tegolino, Retailed by Tiffany & Co., Ref: 425, Sold 21st April 1941	Patek, Philippe & Co, Geneve. A Rare Double Signed 18k Gold Manual Wind Rectangular Wristwatch Retailed By Tiffany & Co.	£7,000–£9,000
Circa 1930	Vacheron Constantin. An 18k Gold Manual Wind Tortue Form Wristwatch Retailed By Birks	£1,500–£2,000
Ref: 5965 2 27, 1950	Longines. A 14k Gold Manual Wind Flyback Chronograph Wristwatch	£5,000–£7,000

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Fliegeruhr, Ref: IW3256-01, Purchased 26th December 2007	$2,044	Bonhams, Oct 2025
Waltham. A 9k Gold Keyless Wind Full Hunter Pocket Watch	Birmingham Hallmark for 1916		Bonhams, Sep 2024
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Clé de Cartier, Ref: 3856, Circa 2010		Bonhams, Nov 2022
Heuer. A Stainless Steel Automatic Calendar Wristwatch	IWC. Montre bracelet en acier avec date mouvement automatiqu		Bonhams, Dec 2023
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Aquatimer, Ref: 3548, Circa 2004		Bonhams, May 2022
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Constellation, Ref: 168.019, Purchased 29th July 1972		Bonhams, Jan 2025
Le Roy Et Fils. A Lady's Continental Gold And Diamond Set Manual Wind Cocktail Watch With Blue Guilloché Enamel Dial	Circa 1910		Bonhams, Nov 2021
Waltham. A 9k Gold Keyless Wind Full Hunter Pocket Watch	Birmingham Hallmark for 1921		Bonhams, Sep 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.