Just one more question.
What’s the meaning of “4/10” in the case?

Rgds

Thanks for all the information.

Thanks for your answer.
You said that it was "modified by a jeweler" just because of the bracelet or there is another thing different?
Do you think it is real JLC? Wich movement is it?
Does this type of watch worth something?

Hello, My father died a few years ago and we found this watch storage in his locker recently. I'm looking for information about it. I already spoke with someone from JLC, but didn't help enough. He just said it was probably bought in Europe on 70s. I would appreciate if someone could help me. I'm tr...