Spirit of Challenge, Ref: O 800 T, Circa 2005 — Pierre Kunz. A fine and rare 18K rose gold manual wind tourbillon wristwatch

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Estimate: £18,000–£22,000 hammer ≈ $24,055–$29,400
Result
Performance
Sale: Bonhams — London Fine Watches, London, New Bond Street · 11 June 2026
Record ID: TB-2026-011711
Record: first seen 19 Jul 2026 · updated 19 Jul 2026 · source ↗
Cite this record: TB-2026-011711 — https://thebasis.art/cite/TB-2026-011711

Pierre Kunz. A Fine And Rare 18k Rose Gold Manual Wind Tourbillon Wristwatch, Spirit of Challenge, Ref: O 800 T, Circa 2005. Bonhams, 11 Jun 2026, lot 22. bought in (did not sell). TheBasis.Art, TB-2026-011711.

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Pierre Kunz. A Fine And Rare 18k Rose Gold Manual Wind Tourbillon Wristwatch, Spirit of Challenge, Ref: O 800 T, Circa 2005. Bonhams, 11 Jun 2026, lot 22. bought in (did not sell). TheBasis.Art, TB-2026-011711.

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From the same sale London Fine Watches · Jun 2026

Lot	Artist	Estimate
Day-Date, Ref: 118209, Circa 2000	Rolex. A Fine 18k White Gold Automatic Calendar Bracelet Watch	£12,000–£18,000
Royal Oak 'Pictet & Cie', Ref: 15189ST.OO.D083CU.01, Purchased 31st M…	Audemars Piguet. A Fine And Rare Special Edition Stainless Steel Automatic Calendar Wristwatch	£15,000–£20,000
Navitimer Quantieme Perpetual, No.25/50, Ref: H29320, Circa 2002	Breitling. A Fine And Rare Limited Edition 18k Rose Gold Automatic Perpetual Calendar Chronograph Wristwatch With Moon Phase, 24-hour, Season And Leap Year Indication	£18,000–£22,000
Master Grand Réveil, Ref: 180.1.99, Circa 1995	Jaeger-lecoultre. A Fine And Rare 18k Gold Automatic Perpetual Calendar Wristwatch With Alarm, Moon Phase And 24 Hour Indication	£7,000–£9,000
Twenty 4, Ref: 4908/310G-011, Purchased 20th October 2006	Patek Philippe. A Fine Lady's 18k White Gold Diamond Set Quartz Bracelet Watch	£16,000–£20,000
Cosmograph Daytona, Ref: 116505, Circa 2010	Rolex. A Fine 18k Rose Gold Automatic Chronograph Bracelet Watch	£20,000–£30,000

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone	GMT Master 'Fuchsia', Ref: 1675, Circa 1968	$26,839	Bonhams, Jun 2021
A. Lange & Söhne. A Fine 18k Rose Gold Manual Wind Wristwatch With Power Reserve	1815 Up and Down, Ref: 221.025, Purchased 1st March 2006		Bonhams, Jun 2022
Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone	GMT Master 'Pepsi', Ref: 6542, Circa 1959		Bonhams, Dec 2021
Rolex. A Fine 18k White Gold Automatic Calendar Bracelet Watch	Submariner, Ref: 16618, Purchased 18th March, 2003		Bonhams, Jun 2025
Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone	GMT-Master II 'Pepsi', Ref: 126710BLR0, Purchased 12th Octob		Bonhams, Dec 2024
Rolex. A Fine 18k White Gold Automatic Calendar Bracelet Watch	Submariner 'Smurf', Ref: 116619 LB, Purchased October 2015		Bonhams, Feb 2021
Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone	Explorer II, Ref: 1655, Circa 1975		Bonhams, Sep 2022
Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone	GMT-Master 'Pepsi', Ref: 16750, Purchased 28th July 1982		Bonhams, May 2022

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.