VINTAGE, 1920'S I THINK? I AM NOT A CONCERTINA PLAYER, MADE IN WISCONSIN, CARL FOERSTER, 23 BUTTONS ON ONE SIDE, AND 28 BUTTONS ON THE OTHER SIDE, BELOWS SEEM GOOD, AND THERE IS NO KEYS PLAYING BY THEMSELVES ,, PLEASE STUDY THE PHOTOS, FOR CONDITIONS, AND IT DOES HAVE THE ORIGINAL BOX/CASE, WITH IT. HIGH QUAILITY CONCERTINA. THE KEYS ALL WORK, ONE BUTTON MISSING, BUT INCLUDED WITH PARTS. THANKS, AND PLEASE SEE PHOTOS.