This should be an easy ID. It is a will known Senator yellow case with an 8AD 17J movement with a 48 date code. The case back is stainless. The dial is white with applied yellow gold markers. Kind of late for this design but I included this 1949 ad....
1949 Bulova Senator.
1949 Senator it is. Looks to be a pretty clean one at that.
1949 Bulova Senator it is : )
1949 Bulova Senator
Strap looks original as well. What does the buckle look like?
It looks to be original. I forgot to mention that. The clasp is not marked.
Nice find Jim. My guess is that the strap is added aftermarket. I base that on two points. First, it is not signed although I'm not 100% sure Bulova signed in this era. Secondly it has been trimmed to fit. I'm a big fan of pigskin straps, I think they are one of the better choices, especially in this color for vintage watches.