I wouldn't reject a concertina just because a note played without a button being pressed. That's probably just a pad loose or missing, which is cheap and easy to repair. The Wheatstone English I restored last winter came with splits in the bellows, broken springs, missing pads, one button missing and broken wrist straps. £75 for the box, £150 for parts and 40 hours of TLC later the box sounds beautiful and is valued at £800.Jock Morris