And my apologies for the other post I submitted. The subject doesn't match the content, but I didn't catch that before submitting. It was about a Mido and the subject mentioned Vulcain.

Thank you. Any info is appreciated.

This is watch has a 10K rolled-gold filled plate case with a stainless steel back. It was serviced in December 2016 and runs like a charm. It has the number 757138 above the Benrus brand on the back. I think it's 1950s or earlier. Certainly looks old, particularly the crown. It's a 30mm case, not in...