TonGenau Die Klaviatur mit Notensystem
TonGenau Die Klaviatur mit Notensystem, Piano Helper, With notation, key names and octaves, By Bernhard Rauchbauer, For keyboard, 29 White keys and 21 black keys, Material: PVC foam board, Dimensions: Approximately 70 x 10 cm x 0.03 cm, Written in German language