Breguet Type XX Only Watch 2021 flyback chronograph (2021)

Breguet Type XX Only Watch 2021 flyback chronograph (2021). Stainless steel case in 38.30 mm, thickness 13.90 mm. Bidirectional graduated rotating bezel with triangular markings for flight calculations. Hand winding fly back chronograph movement Cal. Valjoux 235. Unique piece To be offered at Only Watch 2021 auctions conducted by Christie’s on Nov 6, 2021 Estimate 35,000-50,000CHF Sold for 250,000CHF