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: £3,000–£4,000 hammer ≈ $3,839–$5,119
Result
Performance
Sale: Bonhams — Watches and Wristwatches, London, Knightsbridge · 22 September 2020
Record ID: TB-2026-710680
Record: first seen 21 Jul 2026 · updated 22 Jul 2026 · source ↗
Cite this record: TB-2026-710680 — https://thebasis.art/cite/TB-2026-710680

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, 22 Sep 2020, lot 27. result recorded. TheBasis.Art, TB-2026-710680.

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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, 22 Sep 2020, lot 27. result recorded. TheBasis.Art, TB-2026-710680.

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From the same sale Watches and Wristwatches · Sep 2020

Lot	Artist	Estimate
Santos, Ref: 1565, Circa 2000	Cartier. A Lady's Stainless Steel And Gold Quartz Bracelet Watch	£1,600–£2,200
Circa 1780	A Gilt Metal Key Wind Open Face Pocket Watch With Enamel Scene To Reverse	£1,500–£2,000
Circa 1790	A Continental Gold And Polychrome Enamel Key Wind Concealed Ball Form Watch	£1,500–£2,500
Circa 1830	A Continental Gold And Enamel Key Wind Full Hunter Jump Hour Pocket Watch	£800–£1,200
Circa 1830	Charles, 272 Rue St Honoré, À Paris. A Small Continental Gold Key Wind Open Face Pocket Watch	£600–£800
Circa 1920	A 9k Gold Keyless Wind Open Face Pocket Watch	£500–£700

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Oyster Perpetual, Ref: 177234, Circa 2015	$4,893	Bonhams, Nov 2024
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 16013, c. 1980s		Bonhams, May 2024
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 179161, Purchased 16th April 2010		Bonhams, May 2023
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Oyster Perpetual, Ref: 76193, Purchased 9th September, 2000		Bonhams, Feb 2026
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 16233, Purchased 26th June 1995		Bonhams, Sep 2024
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 1601, Circa 1969		Bonhams, Feb 2026
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 16233, Purchased 30th October, 1990		Bonhams, May 2024
Jaeger-lecoultre. An 18k Gold Manual Wind Wristwatch	Reverso Day-Night Duoface, Ref: 270.2.54, c. 1995		Bonhams, Apr 2025

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.