Hello All I was wondering if anyone knows any resources for Waltham Watches post 1957 after their plant shutdown. There are a number of 1970s dive watches that are referenced by “B-“ but I can’t find any information about the model listings. For example, there seems to be only 2 references online of the B-383 model (if anyone has one or knows where I can find one I’m definitely interested) Thanks in advance!!!