Album: Water-based Ink experiments
Bills stamped with a standard water-based self-inking stamp, and run through the washing machine. This experiment caused me to buy an oil-based stamp.

Album: Oil-based Ink Experiments
Two types of ink were used here, a water-based one (purple) and an oil-based one (red.) The ink had nearly a week setting time. Also, two bills (#1 and #2) were used. They are sequential bills from the same BEP pack, stamped on the same day and in the same way.