These are single vintage harmonicas made by Yamaha and Kawai, approximately 50 years ago. - Materials: Metal, plastic - Size: Approximately 14cm long (Yamaha) Approximately 13cm long (Kawai) *Operation has been confirmed. *The screw on the right side of the Yamaha harmonica in the bottom row of the first image is missing. Please check the images and agree to no claims and no returns.