Hohner PSK 20 Vintage Retro Pulse Code Modulation Music Keyboard- RARE! Condition is pre owned and shows some signs of cosmetic wear from age and usage and overall is in solid and respectable shape. It has been tested and works! This particular Hohner PSK 20 Vintage Retro Pulse Code Modulation Keyboard is rare and hard to find and would be a great addition for a collector or vintage/retro keyboards. Ships out ASAP!