TonGenau Klaviatur Piano Foldable, Foldable Keyboard, Staff system, key names and octaves, By Bernhard Rauchbauer, For piano, 29 White keys and 21 black keys, With small notation on the back, Material: Cardboard, Dimensions open: ca. 66,5 x 10 cm, Dimensions folded: ca.33 x 10 cm, In German language
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