64 Gemini I?

[StoneGroove]

Hi all, new here.

I have an Gemini I that I think is a 64, but I'm not sure if the serial no. I have agrees with that.  There are only 5 digits which make it fall into the 1965 and up scheme I understand.

The amp schematic in the chassis is talking about 6SL7's so I guess that makes it pre 1965, from what I can research.  No 12ax7s mentioned.
7591     7591     7199     6sl7     6sl7     6sn7 (?)     6sl7


There are two serials shown for some reason (the diagrams are worn).
Serial: 01166
Serial: 01983

The original Jensen which I no longer have carried the information C12Q  C7368 2  if that helps date it.

The amp needs a new handle, and the blue diamond has worn sports on the corners.  The tremolo and reverb work well....I think it just needs some TLC, ie. some scratchy pots.  It's a fun amp to play.
I did have it re capped and grounded, death cap removed...a few years ago

Also I never use it anymore and need the space so I intend on selling it.

I just am not sure how to describe with confidence what it is.

Anyone have any clues?

Any suggestions for a fair price for something like this?

Thanks so much for your help.