Ellegaard made by Pigini Free bass or Convertor accordion.
This professional level accordion has L MM reeds in treble and normal 96 bass.
It also has a convertor to change the bass to free bass.
Rather rare Eleegard Special model in mint condition with 3 chin couplers.
72 treble buttons with 7 treble couplers.
96 bass with 7 couplers and free bass master bar.