You are looking at an impressive 39mm diameter (without the crown) vintage BAUME & MERCIER stainless steel chronograph, retailed by Cuervo y Sobrinos in pre-Castro Cuba. The movement is clean, working well, the dial could be an older professional refinish.
This is a fully functional & clean B&M Chronograph in very good condition, with cool wrist presence. "Make me an offer I can't refuse..."
It will be shipped fully insured.