Omega Constellation Manhattan Quartz Watch - 28 mm Steel And Yellow Gold Case - Mother-Of-Pearl Dial - 131.20.28.60.05.002 39mm This pre ceramic series SMP

This pre ceramic series SMP 300 is last of the 007 era just before Co-axial was introduced and it is rather rarer version:

manual-winding Omega 1861 movement with chronograph and small seconds (original movement that was worn on the moon)

white mother-of-pearl dial with a wavy pattern that flows between the iconic claws and 12 diamond indexes

turquoise dial

Omega Constellation Manhattan Quartz Watch - 28 mm Steel And Yellow Gold Case - Mother-Of-Pearl Dial - 131.20.28.60.05.002 39mm This pre ceramic series SMP28 mm stainless steel and 18K yellow gold case, bezel engraved with Roman numerals, domed scratch resistant sapphire crystal anti reflective treatment on both sides, white mother of pearl dial and scratch resistant sapphire crystal, Omega 4061 quartz movement with long life feature to maximize the autonomy of the battery, stainless steel and yellow gold bracelet. Water resistant to 3 bar (30 metres 100 feet).