Omega Constellation Quartz - 25 mm Steel And Yellow Gold Case - Blue Glass Diamond Dial - 131.20.25.60.53.001 anniversary literature

literature

openworked dial with white mother-of-pearl off-centred disc and small seconds counter

caliber 2500 self-winding movement with chronometer and co-axial escapement movement

In the 1930s

yellow Arabic numbers and hands

Omega Constellation Quartz - 25 mm Steel And Yellow Gold Case - Blue Glass Diamond Dial - 131.20.25.60.53.001 anniversary literature25 mm steel and yellow gold case, bezel with engraved Roman numerals, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, blue aventurine glass dial with diamond hour markers, Calibre Omega 4061 quartz movement, approximately 48 months of power reserve, steel and yellow gold bracelet. Water resistant to 30 metres (100 feet).