fat_fleet
Swollen Member
I did some more research, and I think it's actually a 1965 model, not 1964 - a transformer in it has a 1964 date code (so they said at the store - I'm still learning) but the code on the tube chart is "OB" - which after some web searching, I think means February of 1965:
that would make this a CBS era amp by a week or two, I suppose, or maybe among the very last of the pre-CBS amps, depending on how you look at it.
You can cross reference the serial number stamped into the back of the chassis with the Superior Music page-
Superior Music - Fender Amp, Amplifier Serial Numbers
Though CBS bought out in 1965, they still used the AB763 circuit all the way up to (I think) 1968 or 1969. The very first Silverfaces still had Blackface circuits.