The Speedmaster is already just a great all-around daily driver. Put a caliber 321 in it and
link it's still a great daily driver with a little
link extra character and charm. John Mayer's "Look closer look closer still" philosophy comes to mind. The Speedmaster is a watch that perhaps even folks outside the horological world would recognize thanks to the moon connection and the
link fact that it's just a great "starter" watch.