1948 (A8) - 21 Jewels
I think you are correct with a start date around 1945 Mr. Smith. Somebody at some time had one with a "square" date symbol on it and called it a 1936 movement instead of a 1946 movement and it was taken as the gospel. You would be surprised how fast incorrect information can travel on this internet thing. As an example, I found Jerry Lee Lewis's first new car in Bowman Georgia about 12 years ago and took some pictures of it. I saw the documentation proving it was his, but I didn't photograph it or anything. I posted the pictures I took on an internet gun site. About 6 months ago I was surfing the web and came across my pictures posted by someone that is a total stranger to me on the official Jerry Lee Lewis site. They were my pictures that he was taking credit for without even contacting me. I know they are legit, but whoever posted them didn't.
edit: I meant for this to show up as a reply. Can't seem to change it now.
I wish we had a little more info on how the start date for 7AK is entered as 1936. I'm thinking 1945 is a better start date for this movement. I'll check Ranfft and/or Lisa's movement database.
Here ya go.
With the 1935 example (possibly) that Jim Townsend has in his 1935-cased watch, that is now up-to-date, and not a 1945 start!
I'd still like to see an 7AK another more solid example pre-1945, as Jim's may be a marriage. I think Dr simply made a mistake on this start date, and Lisa used his info for her movement date table. Neither MyBulova nor Lisa have a pre-1945 example watch record. I've never seen one that I can believe based on the case in which it is persented.
7AK from a 1946 Tuxedo.