Hello, My late father gave me an Omega dress watch he had received from his dad in the 1960s. The dial has no model name like "Genève" or "Constellation" on it -- see pictures. But I do have the serial number: 23253116. Anyone any idea which caliber & reference this is, and which model name if any? And exact year of fabrication? Thank you in advance, Michael
Serial number is of no help other than knowing it's from the 60s. If you want accurate info, you need to open the back. Otherwise, it's an educated guess.