About half the keys make noise when pushed others don't, looks like somebody has opened it up in the past with screws missing.

The Vintage HOHNER Melodica Alto Harmonica Instrument in Red/Beige is a rare find for collectors and musicians alike. Known for its high-quality craftsmanship, HOHNER melodicas are highly sought after for their unique sound and durability. This particular model features a classic design with a striking red and beige colour scheme, adding a touch of vintage charm to any music lover's collection. Perfect for folk and world music enthusiasts, this melodica is sure to produce beautiful melodies that will stand the test of time.