recipe for gunpowder, aka recipe for gunpowder

An old computer printout with '' on top.

It tells you how to make a bag of gunpowder with the following components:

2 - charcoal briquettes
1 - jar of sulfur
1 - bag of saltpeter

Making this would take decent familiarity with chemistry.
In the upper right corner is a note: 'First discovered by Dr. Ilids.'

It weighs about 100 grams. It is a chemistry protocol. You have no idea what it might be worth.