46 buttons in the right and 120 bass buttons. This accordion is of a system I'm unfamiliar with. Externally, the instrument looks good. There are 2 voice registers on the back. 

The bass notes in the left hand sound like a regular accordion, but the voices in the right hand sound differently when the bellows are released and when the bellows are pressed. This is sometimes the sound of some types of harmonicas, but I'm not familiar with this system to accurately describe it to the buyer. 

Therefore, the accordion is sold AS IS, and my starting price is $0.99. 

Good luck to the buyer who tries out this unfamiliar system.