Portofino Automatic, Ref: 3513-1, Circa 2000 — IWC. A stainless steel automatic calendar wristwatch

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Estimate: £1,000–£1,500 hammer ≈ $1,299–$1,948
Result
Performance
Sale: Bonhams — Weekly: Watches, Online, London, Knightsbridge · 25 October 2024
Record ID: TB-2026-325514
Record: first seen 20 Jul 2026 · updated 20 Jul 2026 · source ↗
Cite this record: TB-2026-325514 — https://thebasis.art/cite/TB-2026-325514

Heuer. A Stainless Steel Automatic Calendar Wristwatch, Portofino Automatic, Ref: 3513-1, Circa 2000. Bonhams, 25 Oct 2024, lot 36. result recorded. TheBasis.Art, TB-2026-325514.

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Heuer. A Stainless Steel Automatic Calendar Wristwatch, Portofino Automatic, Ref: 3513-1, Circa 2000. Bonhams, 25 Oct 2024, lot 36. result recorded. TheBasis.Art, TB-2026-325514.

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From the same sale Weekly: Watches · Oct 2024

Lot	Artist	Estimate
Circa 1970	Blancpain. A Lady's 18k Gold Manual Wind Bracelet Watch	£300–£500
Chrono Cockpit, Ref: B30012, Circa 1998	Breitling. A Stainless Steel And Gold Automatic Chronograph Calendar Bracelet Watch	£500–£700
Quadrant, Circa 1980	Cartier. A Gilt And Enamel Quartz Travel Clock With Alarm	£400–£600
Circa 1980	Cartier. A Gilt Brass And Lacquer Desk Clock	£500–£700
Ref: 2163, Circa 1980	Chopard For Kutchinsky. An 18k Gold Quartz Wristwatch	£800–£1,200
Circa 1970	Chopard For Kutchinsky. A Lady's 18k Gold And Diamond Set Manual Wind Bracelet Watch	£1,000–£1,500

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Fliegeruhr, Ref: IW3256-01, Purchased 26th December 2007	$2,044	Bonhams, Oct 2025
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Rolex. Montre bracelet en acier avec date mouvement automati		Bonhams, Oct 2024
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Clé de Cartier, Ref: 3856, Circa 2010		Bonhams, Nov 2022
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Constellation , Ref: 168.005, Circa 1966		Bonhams, Aug 2026
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Aquatimer, Ref: 3548, Circa 2004		Bonhams, May 2022
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Portofino Automatic, Circa 1990		Bonhams, May 2025
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Monaco, Ref: WW2110-0, Purchased 16th December 2014		Bonhams, Sep 2024
Heuer. A Stainless Steel Automatic Calendar Wristwatch	De Ville, Ref: 35108100, Purchased 14th January 2002		Bonhams, Aug 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.