I’m helping fix up and sell (maybe to myself) my mother in laws 1966 f-20. She bought it new in 1967 or 68 to use in her job as a middle school music teacher. Been in its case in a closet for about 40 years. Overall seems in excellent shape other than tarnished frets and cracks in the bridge along the pins and at the saddle. Taking it to a local luithier soon for that. My question is about the strings. Currently has classical strings mix of nylon and steel. Was this original or were the original all steel? The hang tag says it was originally strung with L-310 strings.
thanks
thanks