New Aidi accordion with 77 keys on the right hand (same note push and pull) in the B system preferred by classical musicians and 120 bass buttons.  Supplied with plan of buttons to get you started right away.  This is a very nice black finished accordion and absolutely brand new.  There are 7  couplers on the right hand to give different tone choices (3 sets of reeds tuned LMM) and 2 bass couplers for different bass tones.  Really nice black finish on this one.  Even fitted with a backpad.
These accordions are quite compact compared to a piano model for the range of notes available.