Heuer Autavia 11630V Travel Omega used the caliber 321

Omega used the caliber 321 in the Speedmaster from 1957 to 1968

Thunderbirds

Heuer and Formula 1 have always gone hand-in-hand

Switzerland

Heuer Autavia 11630V Travel Omega used the caliber 321The Heuer Autavia is perhaps one of the most iconic racing chronographs. Heuer first applied the name "Autavia" (a portmanteau of "automotive" and "aviation") to dashboard clocks in cars and airplanes. But it's with the chronographs intended for use in motorsports that the name "Autavia" is best associated. The earliest Autavias were introduced in the mid 1960s and housed manually wound chronograph movements. These early models had screw down case