Calatrava, Ref: 3445/6, Manufactured 1971, Purchased September 29th 1977 — Patek Philippe. A fine 18K white gold automatic calendar bracelet watch with sigma dial

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Estimate: £8,000–£12,000 hammer ≈ $10,843–$16,264
Result: upcoming — 22 February 2022
Performance
Sale: Bonhams — Watches and Wristwatches, London, Knightsbridge · 22 February 2022
Record ID: TB-2026-543566
Record: first seen 21 Jul 2026 · updated 22 Jul 2026 · source ↗
Cite this record: TB-2026-543566 — https://thebasis.art/cite/TB-2026-543566

Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial, Calatrava, Ref: 3445/6, Manufactured 1971, Purchased September 29th 1977. Bonhams, 22 Feb 2022, lot 130. estimate £8,000–£12,000, unsold at time of record. TheBasis.Art, TB-2026-543566.

Sell probability TheBasis model · trained on recorded passes

73% chance this lot finds a buyer · market base rate 72%

Of the 92,006 held-out lots the model scored about 72%, 69% sold.

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Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial, Calatrava, Ref: 3445/6, Manufactured 1971, Purchased September 29th 1977. Bonhams, 22 Feb 2022, lot 130. estimate £8,000–£12,000, unsold at time of record. TheBasis.Art, TB-2026-543566.

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From the same sale Watches and Wristwatches · Feb 2022

Lot	Artist	Estimate
Circa 1710	Felix Jacob Richter, London. A Fine Gold Key Wind Calendar Quarter Repeating Pair Case Pocket Watch With Repousse Decoration	£8,000–£12,000
Circa 1760	John Ellicott, London. A Fine Gold Key Wind Quarter Repeating Pair Case Pocket Watch With Repousse Decoration Depicting Alexander And Roxana	£8,000–£12,000
Circa 1650	Raphe Ashe, London. A Rare And Early 17th Century Pre-balance Spring Key Wind Oval Puritan Pocket Watch	£8,000–£12,000
Circa 1800	A Rare And Unusual English Key Wind Oval Form Pocket Watch With Polychrome Enamel Case Attributed To Bilston	£2,000–£3,000
Circa 1790	Harper & Son, Salop	£800–£1,200
Circa 1800	G.S Ferdinand Leicht, In Wien. A Continental Gold Key Wind Open Face Pocket Watch	£1,200–£1,800

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial	Calatrava, Ref: 3445/6, Manufactured 1971, Purchased Septemb	$12,120	Bonhams, Feb 2024
Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial	Gondolo, Ref: 5030/22J-001, Purchased 20th December 2000		Bonhams, Jun 2022
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Single Red Submariner, Ref: 1680, Circa 1972		Bonhams, Nov 2025
Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial	Ellipse, Ref: 3605-1, Circa 1970		Bonhams, Sep 2022
Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial	Ellipse, Ref: 3604/2, Purchased 5th September 1975		Bonhams, Feb 2023
Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone	Rolex. Belle montre bracelet en acier avec date et 2nd fusea		Bonhams, Oct 2025
Patek Philippe. An 18k Gold Manual Wind Wristwatch	Calatrava, Ref: 3919, Purchased 7th April 1997		Bonhams, Nov 2025
Patek Philippe. An 18k Gold Manual Wind Wristwatch	Calatrava, Ref: 3520, Purchased 22nd June 1977		Bonhams, Nov 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.