This one seems not to have been worn much as the (original?) band/buckle shows very little wear and the case, dial and crystal look almost mint. It is similar to that submitted by Andyuk , https://mybulova.com/watches/1965-unknown-5048?page=1, and later referenced with "1966-1967 Line Book BAWD0164 Page 7 of 66". except that this one has a silver engine turned dial ,The case is marked Bulova International and like my other 'Unknown', the case date, M5 differs from the movement's date, M7. So another unknown.
We have this watch in a line book WITH a model number. I suggest we tag it with our new naming convention Model 111002
For the record I don't think I'd call the dial treatment 'engine turning' as that really is different. I wish Bulova would have mentioned it in the Line book but they didn't, I really like the look!