I guess I already started by saying I don't think this is the right crystal, but it seems to fit well and sure looks cool! Both movement and case back are stamped L5, leading me to believe this is a 1955, but I leave that for the panel to decide. I've looked through all the '50's watches that are posted and all the ads, the best I can come up with is it looks most like a '53 Ambassador A with different lugs. Also kind of looked like a Senator in one of the ads. I wore this around all day and forgot I had it on, so light and comfortable. Kept awesome time too! Whatever it's title is I'm calling this one A Keeper. It's funny how you fall for a watch.





1953 Ambassador "A" ad here in main ad database. Snippet below:
In reply to Sorry Dane, I missed this one by Geoff Baker
In reply to When I zoom into the "A" in by Andersok
In reply to When I zoom into the "A" in by Andersok
Changed my mind, well spotted Ken!
Ambassador "A" examples in db:
http://www.mybulova.com/watches/1953-ambassador-2615
http://www.mybulova.com/watches/1953-ambassador-5882
http://www.mybulova.com/watches/1954-ambassador-6520
Unknown.