Omega also decided to equip this 150th Anniversary of replica Omega Speedmaster with a sapphire crystal instead of the Hesalite (plexi) crystal that was (and is) used for the Moonwatch and Speedmaster’57 Replica. The gold and the use of a sapphire crystal also adds a nice bit of weight to the watch of course. The matte dial and gold broad arrow hands and Omega logo gives a great contrast. The yellow gold BASE 1000 bezel and lyre lugs case also matches perfectly with the gold elements on the dial of course.
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Underneath the caseback is Omega Caliber 1863 (instead of 1861), which is a nicely decorated version of the regular hand-wound caliber 1861. The production of the caliber 1863 (and 1861) started one year earlier, so this is one of the first references with this movement.