Knobs, stilted, for register levers, coupling and transposing blocks. There are deviations in measurments and shape because of the craft manufacturing.
A = bone knob white
B = horn knob black
Art.No. Ø x L
16-3920 9 x 9
16-3922 9 x 9
16-3933 12 x 12
16-3934 12 x 12
