Speedmaster Pro 3572.50 Caliber 1863 It’s Speedy Tuesday! One of our readers, Erik Ebeling, sent us photos of his beloved caliber 1863 Omega Speedmaster Professional reference 3572.50. This discontinued model is similar to the ‘standard’ Moonwatch model reference 3570.50 but with a sapphire case back. In the current Omega collection we still find a Speedy Pro with a sapphire case back, but it also has the sapphire front crystal. This reference 3572.50 from Erik has the Hesalite crystal on top, the sapphire crystal on the back. Erik let us know that the production year of this specific watch was around […]
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