Joblot includes Rolex Oyster case back, numbers between lugs are: 6082 and 695689, measures 35mm across not including crown.
Rolex case back numbered inside 3882 and 262409 on outside, measuring 30 mm across.
Tudor case back stainless steel numbers on back are 688219 and 775, measures 31 mm across.
Plus other unmarked spares and empty Rolex part holder.
Age related wear, backs have watch service marks on inside, please see photos to judge for yourself.
Please see my other listings.