L5 Case L4 10BT 17J Movement
This one looks like it would be right at home in the Ambassador line, but I cannot find it in any ads. May be an Unknown model; will see if anyone else is able to find a match.
I'm at a loss on this one as well. Unknown for me for now.
Unknown for me as well.
Unknown
I'm not really finding a match either.
1955 Bulova Unknown
I currently have a watch that has the exact case and dial face as yours. Sorry I don’t have a photo of it yet because it is currently waiting in line for a restoration. I can tell you that the watch was purchased in 1953 and has the L3 code on the case back. I too have been trying to figure out what model it is. My mother purchased it as a gift for my Dad shortly before they were married. As soon as I get it back I will post a picture. Unfortunately that could be a year or more from now.
This is the closest ad I can find. It is from a 1960 Houston Jewelers catalog. I think the picture shows some shadowing. Putting it out there in case this leads us to getting closer to ID'ing this watch.

In reply to This is the closest ad I can by JimDon5822
Although there is similarity, but the lugs are known to be different
Well done, Ken
1955 Bulova Kirk works for me.