Britton

The reference CK2915 was the forerunner to swiss replica omega watches salethe OMEGA Speedmaster line. The OMEGA Caliber 321 powered this timepiece. They used the Caliber 321 in all subsequent Speedmaster watches until late 1968. This is when OMEGA introduced the new caliber 861.

The original 1957 OMEGA Speedmaster model laid the foundation for the line’s signature features: its 12-hour triple-register chronograph layout, its domed Plexiglas crystal, and its high-contrast index markers.
The only differentiating aspect of these models were their broad arrow hands. This got an update in subsequent editions. In 1959, a second swiss replica watches sale
model of the Speedmaster, ref. CK 2998, debuted and featured alpha hands. This remained consistent in following models until 1963. The now-standard straight baton hands replaced them.