311.50.39.30.01.001Ref

Launched in 2022 to mark the 65th anniversary of the Speedmaster, this reference 311.50.39.30.01.001 features a 38.60mm 'Canopus' white gold case and a black onyx dial. It is powered by the hand-wound calibre 321 B, visible through a sapphire caseback engraved with a seahorse design with a blue sapphire set in its eye.