I bought a old Omega pocket watch. The dial took my intension because it is different material than usual. I would like to know anything possible about watch. It has been serviced, because there are a few markings inside. Dial is some sort of metal. (silver?) THe case is stamped 33XXXXX but that doesent tell the age of watch? Watch measurements are case 50mmx50mm. Dial is 42mm. Movement is 37mm. Thickness is 10mm.Thank you!