Give us the FON and you should get an immediate answer.
If it had been that easy, I wouldn't be asking here :-D
There's no sign of a serial number on the headstock, sticker inside the F-hole or stamp on the interior either.
FON stamps are often away from the f-hole, and are likely applied before the top is put on.
You have to look for it. :ganz
I did not know this...always assumed my '60 didn't have one. Now I can go looking for it!
They are usually close enough to the f-hole to see [flashlight helps], but often overlooked since they aren't directly under it most of the time.