The truss rod doesn't work, it's broken. Also listed on other flea market apps. It's listed cheaper there due to lower fees. Made in the early 70s. The sound is excellent. 12th fret: 6th string approx. 2.4mm 1st string approx. 2.0mm Comes with a case, but please consider it for shipping and packaging. #K.Yairi #Martin #Gibson #Martin #Gibson