Perhaps you AA1 is newer than you thought.
Just looked in my records, and I actual have one myself, lol,
and mine is a 1956.
Does yours look the same?
If AA still denoted “deluxe” in 1956, I’m confused, as
I don’t see that mine ever would have had a rewind.
===============
1956
Neptune AA1
Serial Number F505UU
1.7 hp
1/2 pt / gal
Plug, Champion J6J
===================
Prepare to be boarded!