I think this is a 66 Beau Brummel - Hand wind not automatic. I am not a watdhmaker or Jeweler so cannott figure out how to open the case. I know that the movement comes out from the front, but cannot figure out how and do not want to mark it. The face has Diamonds at 12,3,6,9 raised Bulova, and painted Waterproof - face appears to be silver or white gold with a colouring added ?? The case is 33mm overall10kt white gold filled. M6, antimagnetic, shock resistant, waterproof. I think the crocodile strap is possibly original - watch appears to have very little wear. Small crown also 4mm Identifiction would be great thank you
Cheers Janet - Case Serial No changed to T846421 - see pic
If you look very closley I think you will find the first number in the serial number is not a 1 but is a T.
After an exhaustive search of the db and the new finds, I am sorry to say Unknown at this time.
Thanks JP - did not have my glasses on - That is indeed a T - Serial Number changed to T846421
Beau Brummel "C", 1964 ad.

Ditto