Bulova 1960 Prince

Here's an interesting one that appears to have changed variant letter in 1963. From 1960 to 1962 it was Prince "A" and white version was Prince "B". Based on the linebooks, it appears that in 1963 Prince "A & B" changed case shape (and model #) and subject watch became Prince "D" with a different band and model number.

Based on case and movement dates of 1960, I believe this to be 

1960 Prince "A"

As received and keeping time on a nice replacement expansion band.