1 DM2000 8 months ago Hi - new to this site and doing some research for a friend. She has inherited a Chet Atkins Tennessian with two pickups, open f holes and a 4 digit serial number stamped at the top of headstock along the top edge of 1350.My research thus far shows this is an enigma as all signs point to Baldwin era guitar with a non-standard serial number. Also, in the few dozen pics i've examined for the various model years, I have not seen that black painted Bigsby tailpiece . . . Thinking it's either a prototype or a repaired guitar with a new neck?Appreciate any help you all can provide!