Datejust, Ref: 6605, Circa 1956 — Rolex. A fine and rare 18K gold automatic calendar bracelet watch with depth rating and 'Superlative Chronometer By Official Test' dial retailed by Serpico Y Laino

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Estimate: £15,000–£20,000 hammer ≈ $20,079–$26,772
Result
Performance
Sale: Bonhams — London Fine Watches, London, New Bond Street · 11 December 2025
Record ID: TB-2026-171279
Record: first seen 20 Jul 2026 · updated 22 Jul 2026 · source ↗
Cite this record: TB-2026-171279 — https://thebasis.art/cite/TB-2026-171279

Rolex. A Fine And Rare 18k Gold Automatic Calendar Bracelet Watch With Depth Rating And 'superlative Chronometer By Official Test' Dial Retailed By Serpico Y Laino, Datejust, Ref: 6605, Circa 1956. Bonhams, 11 Dec 2025, lot 39. bought in (did not sell). TheBasis.Art, TB-2026-171279.

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Rolex. A Fine And Rare 18k Gold Automatic Calendar Bracelet Watch With Depth Rating And 'superlative Chronometer By Official Test' Dial Retailed By Serpico Y Laino, Datejust, Ref: 6605, Circa 1956. Bonhams, 11 Dec 2025, lot 39. bought in (did not sell). TheBasis.Art, TB-2026-171279.

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From the same sale London Fine Watches · Dec 2025

Lot	Artist	Estimate
GMT-Master II 'Sprite', Ref: 126720VTNR-0001, Purchased 6th September 2023	Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone	£8,500–£12,500
Endeavour Concept, Ref: 1321-0602, No.1/20, Purchased 26th January 2017	H. Moser & Cie. A Fine And Rare Limited Edition Palladium Manual Wind Wristwatch	£25,000–£35,000
Day-Date, Ref: 118209, Circa 2000	Rolex. A Fine 18k White Gold Automatic Calendar Bracelet Watch	£15,000–£20,000
Nautilus, Ref: 7118/1200R-001, Circa 2020	Patek Philippe. A Fine And Rare 18k Rose Gold Diamond Set Automatic Calendar Bracelet Watch	£70,000–£90,000
Compax 'Nina Rindt', Ref: 885103/02, Circa 1965	Universal Genève. A Fine And Rare Stainless Steel Manual Wind Chronograph Wristwatch	£10,000–£15,000
Seamaster 300, Ref: ST 165.024, Circa 1968	Rolex. A Rare Military Stainless Steel Automatic Wristwatch Issued To The Royal Navy	£25,000–£35,000

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Rolex. A Fine And Rare 18k Gold Automatic Calendar Bracelet Watch With Depth Rating And 'superlative Chronometer By Official Test' Dial Retailed By Serpico Y Laino	Datejust, Ref: 6605, Circa 1956	$17,154	Bonhams, May 2026
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Single Red Submariner, Ref: 1680, Circa 1974		Bonhams, Dec 2021
Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone	GMT-Master II 'Batman', Ref: 116710BLNR, Purchased 24th June		Bonhams, Dec 2021
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	'Double-Red' Sea-Dweller, Ref: 1665, c.1977		Bonhams, Oct 2023
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Submariner 'Starbucks', Ref: 126610LV, Purchased 21st August		Bonhams, Jun 2023
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Double Red Sea Dweller, Ref: 1665, Circa 1970		Bonhams, Dec 2020
Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone	Explorer II, Ref: 1655, Purchased 24th December 1978		Bonhams, Jun 2023
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Sea-Dweller Deepsea, Ref: 126660, Purchased 9th July, 2020		Bonhams, Nov 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.