Get your very own Harriet Tubman Money Stamp made with high quality photo-polymer on a self inking stamp. For a perfect impression, simply line up the outer edges of the stamp with the top border and the federal seal on the left (see photos). Every stamp ships with a practice sheet to stamp on prior to stamping your money. This Harriet Tubman stamp is perfect for stamping over Andrew Jackson's portrait on the $20 dollar bill.