Dieter Otto 180 K-JNMS, F/Bb Doppelhorn, Double Horn, Jeff Nelsen model, 4 Rotary valves with string linkage system, Bell Ø: 310 mm, Adjustable finger hook, Body and bell made of brass, Hand-hammered bell, Independently slides, Easy response, Bell scale: Large, Bore: 12 mm, Non-lacquered@+*Note:* Case not included@+@+