Cosmic, Ref: 2485, Circa 1947 — Omega. A rare and large 18K rose gold manual wind triple calendar wristwatch with moon phase

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Estimate: £6,000–£8,000 hammer ≈ $8,120–$10,827
Result
Performance
Sale: Bonhams — London Watches, London, Knightsbridge · 10 September 2025
Record ID: TB-2026-172004
Record: first seen 20 Jul 2026 · updated 22 Jul 2026 · source ↗
Cite this record: TB-2026-172004 — https://thebasis.art/cite/TB-2026-172004

Omega. A Rare And Large 18k Rose Gold Manual Wind Triple Calendar Wristwatch With Moon Phase, Cosmic, Ref: 2485, Circa 1947. Bonhams, 10 Sep 2025, lot 19. bought in (did not sell). TheBasis.Art, TB-2026-172004.

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Omega. A Rare And Large 18k Rose Gold Manual Wind Triple Calendar Wristwatch With Moon Phase, Cosmic, Ref: 2485, Circa 1947. Bonhams, 10 Sep 2025, lot 19. bought in (did not sell). TheBasis.Art, TB-2026-172004.

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From the same sale London Watches · Sep 2025

Lot	Artist	Estimate
Circa 1995	Audemars Piguet. A Slim Platinum Keyless Wind Open Face Pocket Watch	£6,000–£8,000
Circa 1942	A. Lange & Söhne. An Oversized German Military Steel Manual Wind Observation Wristwatch	£4,000–£6,000
Submariner, Ref: 6536-1, Circa 1957	Rolex. A Stainless Steel Automatic Bracelet Watch With Rare Early 'no Hash' Bezel	£15,000–£20,000
Oyster Perpetual 'Super Precision', Ref: 5002, Circa 1952	Rolex. A Lady's 18k Gold Automatic Bracelet Watch	£2,000–£3,000
Ref: 3191, London Import mark for 1956	Patek Philippe. An 18k Gold Manual Wind Bracelet Watch	£2,500–£3,500
Navitimer, Ref: 806, Purchased 4th June 1968	Breitling. A Stainless Steel Manual Wind Chronograph Wristwatch	£2,000–£3,000

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Submariner, Ref: 16610, Purchased 23rd March 2000	$9,528	Bonhams, Sep 2025
Rolex. A Stainless Steel Automatic Bracelet Watch	Explorer, Ref: 5500, Circa 1966		Bonhams, May 2025
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Submariner, Ref: 1680, Circa 1979		Bonhams, May 2024
Rolex. A Lady's Stainless Steel And Gold Automatic Calendar Bracelet Watch	Datejust, Ref: 116203, Purchased 3rd October 2005		Bonhams, May 2022
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Sea-Dweller, Ref: 16600, Purchased 19th October 1992		Bonhams, Dec 2022
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Rolex. Belle montre bracelet en acier avec date mouvement au		Bonhams, Feb 2025
Rolex. A Stainless Steel Automatic Bracelet Watch	Rolex. Montre bracelet en acier mouvement automatique Explo		Bonhams, Feb 2024
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Submariner, Ref: 16610, c.2003		Bonhams, Apr 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.