schematic for gangland buster mine, aka schematic for gangland buster mine and buster

A schematic for building a large landmine which hooks into the gangland street power system.'

It tells you how to make a buster mine with the following components:
1 - firing pin assembly
1 - piezoelectric ignition circuit
1 - bag of gunpowder
1 - ammonia
Making this would take decent familiarity with craft and decent familiarity with chemistry.
In the upper right corner is a note: 'First discovered by Dr. Zaylin.'

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