5 rotational circles are arranged in the 4 corners and the center of a square. Neighboring circles are overlapping; the common areas with neighboring circles contain spindle-like colored pieces. By turns of the circles, the pieces can be moved around.
The puzzle is absolutely trivial, it can be seen as a mechanism for creating nice patterns.
This item comes from the collection of Dieter Gebhardt.
Inner circle diameter: 4.2cm
Puzzle size across two circles 9.6cm
Diagonal distance between two Knobs 3cm
Height without knows 0.9cm, knob height 1.3cm
The backside inscription reads: "R.O.C. PATENT NO. 65151"