Watch Facts

18k white gold case in 39mm. Automatic caliber 868A/2 perpetual calendar function. Chestnut brown guilloche enamel dial, engraved moonphase counter. Power reserve is at 70hrs. Unique Piece Estimate is 55,000 – 70,000CHF

Stainless steel case in 40mm. Automatic HMC 810 three-dimensional Manufacture Calibre with Tourbillon. Power reserve is 72hrs Unique piece To be offered at Only Watch 2021 auctions conducted by Christie’s on Nov 6, 2021 Estimate 60,000-80,000CHF Sold for 750,000CHF

Gronefeld 1941 Remontoire Only Watch (2019). Stainless steel case in 39.5mm. The movement is a manual winding caliber that features an eight seconds constant force mechanism; ensuring the force serving the balance wheel does not fluctuate. From the mainspring being fully wound to the last minute of the power reserve, the delivery of the energy never fluctuates. The result is that the amplitude and rate remain consistent, leading to superior precision. This Only Watch edition has a frosted middle case with its unique frosted dial. A blue governor is visible at 9 o’clock and spins every eight seconds when the remontoire constant force mechanism is functioning. Power reserve 36 hours. Unique piece Estimate at 48,000-69,000CHF Hammered at 70,000CHF

Tantalum case in 42mm. Using an automaton powered by the Octa movement, the minutes are driven by a rotating disk at 12; the mobile fingers indicating the hours by its position. Automatic FFC caliber 1300.3 in 18k rose gold. Unidirectional winding rotor, power reserve is at 120hrs. Unique piece To be offered at Only Watch 2021 auctions conducted by Christie’s on Nov 6, 2021 Estimated at 300-400k CHF Sold for 4,500,000CHF

40mm Tantalum case, 5.80mm thick, tantalum crown. Automatic manufacture BVL Calibre 305, hours and minutes, retrograde date, day, month and retrograde and leap year. Power reserve is 60hrs Unique piece To be offered at Only Watch 2021 auctions conducted by Christie’s on Nov 6, 2021 Estimate 80,000-120,000CHF Sold for 220,000CHF

Case is in sapphire Crystal at 45mm. Manual winding movement calibre BR-CAL.206. Moving skull when wound by hand. Crystal Sapphire with anti-reflective coating. Water-resistance 50 metres. Unique Piece To be offered at Only Watch 2021 auctions conducted by Christie’s on Nov 6, 2021 Estimate 90,000-110,000CHF Sold for 220,000CHF

Sandblasted titanium case in 39mm. Automatic Calibre 2121. Power reserve is 40hrs. Unique piece offered at Only Watch 2021 auctions conducted by Christie’s on Nov 6, 2021 Estimate 160,000-320,000CHF Hammered 3,100,000CHF

• Edward Sexton, one of the world’s finest tailors, is partnering with Andersen to present a “Unique Piece”.
• Bi-colour red and white gold case with flutes, manufactured by hand in 40mm.
• Automatic movement Frédéric Piguet 11.50 dual barrel.
• White gold “Losanges Magiques” (magic lozenge) hand guilloché dial with two windows.
• One window at 12 o’clock to display days of the week, Dimanche, Montag, Tuesday, Mercoledi, Jueves, Joum’a, Shabbat.
• The other at six o’clock to display the date.
• “A” shaped ANDERSEN Genève hands in red gold.
• Power reserve is 72 hours Unique piece Offered at Only Watch 2021 auctions conducted by Christie’s on Nov 6, 2021.
• Estimate 60,000-70,000CHF Hammered at CHF 100,000CHF

• Platinum case in 38mm.
• Dial is layered enamel finished in opaque, grand feu enamel, and then in champagne-hued, translucent flinque enamel.
• All new manual caliber RRCC II, certified by the Besançon observatory.
• Power reserve is 100hrs Unique piece To be offered at Only Watch 2021 auctions conducted by Christie’s on Nov 6, 2021.
• Estimate 70,000-100,000CHF SOLD for 800,000CHF

Stainless steel case in 38.30mm. Bidirectional rotating bezel with triangular markings for flight calculations. Manual winding Breguet. Cal. Valjoux 235 column-wheel chronograph with flyback function. Unique Piece Estimate : 35,000 – 50,000CHF