Beautiful black Castiglione Accordian Model 702.  I am not versed in musical instruments at all so please ask any questions prior.  Appears to be  new, and never used.  Could use a proper cleaning, I am not sure the best way to clean these so I just wiped it off with a dry rag to get the dust off.  Buttons all seem to function properly.  I opened and closed it and there is pressure both ways to make sure it holds.  Once again I am not versed in these and am basing my price off others I've found sold but feel free to make an offer.