Ordinarily available only in rose gold or steel, the Type XXI is the larger, jazzed up version of Breguet‘s classic Type XX pilot’s watch. For Only Watch 2015 Breguet created a one-off specimen of the Type XXI in platinum, a metal never used before on this model, featuring a dark grey dial with parchment-coloured Super-Luminova.

Breguet was one of the firms, Auricoste and Vixa were two others, that supplied the French air force with the Type XX chronograph starting in the 1950s, continuing until mechanical watches went out of fashion in the 1970s.

While the Type XX was an ordinary flyback chronograph designed for pilots, the Type XXI is a modern interpretation of the original, featuring extra functions like the central minutes counter and day and night display at three o’clock.

The Only Watch edition is distinguished by its platinum case, and also the grey dial (the regular editions have either black or brown dials).

The Type XXI Only Watch will be sold at Phillips on November 7, 2015 in Geneva, alongside 42 other unique timepieces, to raise funds for research into Duchenne muscular dystrophy.