The product is a rare vintage Johann Köstler "OPERA" harmonica from the 1940s, featuring a diatonic key of C. It comes with a case for protection and storage. Known for their quality craftsmanship, Köstler harmonicas are highly sought after by collectors and musicians alike for their rich and unique sound. This particular model, with its vintage charm and distinctive design, would be a valuable addition to any musical instrument collection. Still in working condition this harmonica is pre-owned and sold as is. There's some wear - see pictures.
