Adding to my collection is what I believe to be an Academy Award "N" like this one https://mybulova.com/watches/1951-academy-award-5009. This crystal was very chipped so with Kurt's help I found one in my crystal stash that fit, the GS-CC283.
It has a 10K gold filled case date stamped L1. It is very small like the "L" and "M". It has a 5AD 21 jewel movement also date stamped L1. The movement appears to be working well.