It’s Speedy Tuesday! A few months ago, I wrote about the differences between the Speedmaster Professional (regarded as the Moonwatch) and the Speedmaster Reduced. We now have a similar watch to the Reduced, a 39mm automatic Speedmaster watch, especially for the Japanese market. However, where the original Speedmaster Reduced was equipped with a piggy back movement Omega caliber 3320, this Speedmaster reference 3513.53.00 has an Omega caliber 1152 movement, based on the ETA/Valjoux 7750. Where the Omega caliber 3220 movement is a piggy back movement (Dubois-Dépraz 2020 chronograph add-on module on top of the ETA base movement), the caliber 1152 […]
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