Movement Serial No.:
Case Serial No.:
My grandfather handed this down to me. My grandmother bought it for him. My dad remembers buing it in the store but he was young. Wanted verification on what it is, I'm suspecting 1967 Diamond Excellency "J." I took pictures of this strange white pastey substance on the band. Wanted to know if I should pay to have this professionally cleaned or if there is a way I can do it myself?