Omega Speedmaster CK2915: The First Speedmaster in Unprecedented Detail
The Omega Speedmaster CK2915 is the first and rarest Speedmaster ever made—launched in 1957 and powered by the legendary Caliber 321. Known as the original ‘Broad Arrow’ Speedmaster, the CK2915 introduced key design features like the external tachymeter bezel and applied Omega logo. Produced in extremely low numbers across references 2915-1, 2915-2, and 2915-3, it set the blueprint for the Moonwatch legacy. With its distinctive dial fonts, vintage steel bezel, and straight-lug case made by Huguenin Frères, the CK2915 is a grail for collectors of vintage chronographs. Often compared to the Rodania Geometer for its early dial layout influence, the Speedmaster 2915 remains one of the most important chronographs in watch history.