80's SIGMA by MARTIN LP,was made in the TOKAI factory back then / Wikipedia quote : Tokai have also made Gibson and Martin Acoustic model replicas. In 1972 Tokai went into a joint venture with Martin to supply Acoustic guitar parts and also to build Martin's solid body Sigma guitars. In 1973 Tokai started making the "Cat's Eyes" Martin Acoustic replicas.* mahogany body finished in piano black* mahogany neck with rosewood fingerboard* 2 sweet sounding humbuckers* all golden parts* we compared this one to a bunch of Gibson Les Pauls and she sounds very,very authentic