London Import mark for 1909 — H. Brooks, 40 Fenchurch Street. An 18K gold keyless wind triple calendar quarter repeating chronograph pocket watch with moon phase

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Estimate: £4,000–£6,000 hammer ≈ $5,083–$7,624
Result
Performance
Sale: Bonhams — Watches and Wristwatches, London, Knightsbridge · 21 July 2020
Record ID: TB-2026-710887
Record: first seen 21 Jul 2026 · updated 22 Jul 2026 · source ↗
Cite this record: TB-2026-710887 — https://thebasis.art/cite/TB-2026-710887

H. Brooks, 40 Fenchurch Street. An 18k Gold Keyless Wind Triple Calendar Quarter Repeating Chronograph Pocket Watch With Moon Phase, London Import mark for 1909. Bonhams, 21 Jul 2020, lot 20. bought in (did not sell). TheBasis.Art, TB-2026-710887.

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H. Brooks, 40 Fenchurch Street. An 18k Gold Keyless Wind Triple Calendar Quarter Repeating Chronograph Pocket Watch With Moon Phase, London Import mark for 1909. Bonhams, 21 Jul 2020, lot 20. bought in (did not sell). TheBasis.Art, TB-2026-710887.

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From the same sale Watches and Wristwatches · Jul 2020

Lot	Artist	Estimate
London Import mark for 1927	Vacheron & Constantin. An 18k Gold Manual Wind Square Form Wristwatch	£1,200–£1,800
Ref: 106511-1, Circa 1960	Universal Geneve. An 18k Gold Manual Wind Wristwatch	£800–£1,200
Oyster Perpetual, Ref: 6084, Circa 1951	Rolex. A 9k Gold Automatic Wristwatch	£5,000–£7,000
Circa 1910	Le Roy Et Fils. A Lady's Continental Gold And Diamond Set Manual Wind Cocktail Watch With Blue Guilloché Enamel Dial	£500–£700
Circa 1950	Longines. A 14k Gold Manual Wind Rectangular Wristwatch With Faceted Lugs	£500–£700
Circa 1950	Heuer. A 14k Gold Manual Wind Triple Calendar Wristwatch	£3,000–£4,000

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
H. Brooks, 40 Fenchurch Street. An 18k Gold Keyless Wind Triple Calendar Quarter Repeating Chronograph Pocket Watch With Moon Phase	London Import mark for 1909	$4,879	Bonhams, Sep 2020
Cartier. A Lady's 18k Gold Manual Wind Wristwatch	Baignoire, London Import mark for 1968		Bonhams, Nov 2024
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 79173, Purchased 14th June 2003		Bonhams, Feb 2023
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 279173, Recent		Bonhams, Nov 2022
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 79173, Circa 2003		Bonhams, Feb 2023
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 178241, Purchased 17th October 2013		Bonhams, Sep 2021
Omega. An 18k Gold Automatic Calendar Wristwatch	Day-Date, Ref: 18038, c. 1984		Bonhams, Feb 2025
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 16013, c. 1980s		Bonhams, May 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.