ISO
170 square taper triple crankset.. just the drive side, with chainrings hopefully. prefer sugino/suntour
two 110bcd chainrings of the same size around 38-42t or so (needed for a tandem timing chain, prefer even number teeth but size not critical)
130bcd chainrings 52/42 or similar
have
misc late 80s mtb stuff
144bcd 52/42 chainrings