Unlike the Speedmaster Professional 50th Anniversary, this Speedmaster 1957 has no Lemania hand-wound movement. The Co-Axial column wheel chronograph movement caliber 3201 in this Speedmaster 1957 is actually based on a Piguet 1285 movement. It is not only a Co-Axial column wheel chronograph, but also chronometer certified (COSC) as can be seen below.
The OMEGA caliber 3201 has a wonderful finish as you can see. It is white rhodium plated and has Geneva waves for decoration. The engravings on the movement are gold-plated. This movement has a power reserve slightly bigger than its Lemania counterpart, 55 hours versus 48 hours.
Besides the movement, there are some more differences of course. The dial is made out of enamel and the wording on the dial have a different typography than we’re used to.
Also, the watch is water resistant up to 100 meters instead of the usual 50 meters.
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