Weltmeister accordion 120 Bass, 5 bass registers, 11 treble registers, 41 keys admin | August 6, 2023 Weltmeister Accordion 120 Bass, 5 bass registers, 11 treble registers, 41 piano keys. Good condition including straps and hard case. Black gloss finish to main body. Minor scuffs on top grill as shown in last 2 photos.