schematic for an electromag inductor, aka schematic for an electromag inductor and schematic for electromag inductor

(No description set.)

It tells you how to make an electromag inductor with the following components:
1 - brick of quick-mold plastic
1 - electromagnetic motor
1 - superconductor ring
1 - electromagnetic dissipation assembly
Making this would take expertise in craft.
In the upper right corner is a note: 'First discovered by Dr. Mservo.'

It weighs about 100 grams. It is a electromechanical schematic. You think it might fetch about $2 on the market.