YAMAHA Harmonica NO.24B This is a 24-hole, solo-tuned tremolo harmonica. Like the Yamaha Harmonica NO.21B, it allows for advanced playing techniques such as bass and arpeggio playing to suit the musical piece. Both the harmonica itself and the box are relatively clean. It includes anti-rust paper for the body, and the storage condition is good. Please understand that this is a used item before purchasing.