Details
Die Stroboscopische Scheibe
a phenakistiscope set with twelve 7 inch diameter disks each marked Gesetzlich deponirt. G. Söhlke in Berlin and one nine inch diameter slotted disk, in maker's box.
a phenakistiscope set with twelve 7 inch diameter disks each marked Gesetzlich deponirt. G. Söhlke in Berlin and one nine inch diameter slotted disk, in maker's box.