I would agree that the back look likes it's stainless.

Hopefully this is legible. I don't see anything on it besides a personal inscription - BEC July 1955 and Geneve.

Thanks for your time,

Mark

I was given this watch as a gift. I can't find any information on it and would like to know more.
I don't know what it's made of or the model number and don't know how to get the back off.
Looks to have the original band. Seems to run well.

Thank you.