This is a Hohner Club IIIM model accordion in C/F.  Three reed sets, LMM, with tremolo tuning.  Possibly  from the early 1970s as it has mylar valves, "T" stamped reeds, but  retains the pushbuttons of earlier versions. Buttons work properly.  Original Hohner case(with key)  and instruction book included. Plays well and has good volume. No signs of repairs.  No cracks.  Valves look good BUT there is some valve rattle on the lowest notes of the C row. Also, notable bellows tape wear. Leather straps show some wear but overall leather is very nice.  I will be listing several button accordions this week so check my other listings.