i recently purchased this vintage omega Geneve automatic ladies watch and have very little information on it. I was told by the seller it is a cal 565 and gold plated. For a cal 565 there is a quick set for the date however this one does not have that feature. I believe it is a cal 584 with no quick set. The diameter including the crown is about 22mm and the strap from between the lugs is about 10mm. The strap is not an original.