Here is another Unknown like this one. https://mybulova.com/watches/1960-unknown-12354. note the serial numbers are only 35 apart.
Interesting yellow gold plate coin edge bezel with a stainless back. Interior case back and movement (with import code) with the case marked "M0" and movement "M2". Quadrant dial with gold markers and "Bulova" in gold raised letters on dial, as well as "Waterproof". The case back is stamped Bulova on the outside and "AM" in a diamond on the inside.
Now that we have two of these identical models we know it is a factory model most likely from the Clipper or Sea King family.
I think I found a close match in a 1968 ad. I believe this is a white dial version of the black Clipper listed below. Note it says available in Black or White. Big gap in years but it looks to be a match.
I agree that the subject looks like the advert but 8 year difference doesn't add up for me. I'm sticking with Unknown for now. This one does however have an International feel
I was thinking international feel to it also, but I do see the import stamp on the movement.
Unknown model for me.
Still unknown for me.