This interesting and well preserved example of a blow accordion was made in Czechoslovakia. It had belong to an 89 year old gentleman who owned the instrument since he was a child. It had only come up for sale recently because the man was moving into a retirement home.
Unfortunately the mouthpiece had been lost at some point, however the rest of this Czech tin sax is in remarkable condition. According to the seller though, the instrument still worked when you blew into it.