This appears to be a 1949 Sponsor. It has a 10BH movement with a 48 date code and a stainless case back with a 49 date code. The case is 10 yellow rolled gold plate. This is a surprisingly large watch with cool lugs. The last service date on the inside was 1959 so it was really sticky. Keeping good time now.
FYI...The hands are incorrect based on the ad. I need to source stick hands.
I like this one, great lug details.
1948 Sponsor
EDIT: Case stamp appears to be 1948 - A8, can you confirm?
Agree with Sponsor.
1948 Bulova Sponsor
I verified that the caseback date code is 49 so shouldn't this be a 1949 with 1948 movement? I'm not quite sure what year.
In reply to I verified that the caseback by JimDon5822
Yes, thanks for confirming. If the case is dated 1949, that is the watch date.
I amend to 1949 for date
1949 Sponsor
Nice ad match. Nice looking watch and lugs are cool too.
1949 Bulova Sponsor
Great looking lugs. A good original example here of another 1949 Bulova Sposor