I am obsessed by the graphics on these antique German notgeld, or emergency money. Notgeld was printed by small municipalities and town banks in Germany from WWI through the 1920′s and 30′s. Though it was not legal currency, it was generally accepted, and actually proved useful due to the outrageous inflation in Germany at the time. These scans are all from Flickr user Iliazd, who has an awesome notgeld set with something like 900 different marks in it! If you love sweet graphics or history, or both, be sure to give it a browse.
Via Dark Roasted Blend.