The German postal service printed 14 million of the stamps in 2001. They show Hepburn as Holly Golightly from the film Breakfast at Tiffany's with a cigarette holder between her lips.
Hepburn's son Sean Ferrer initially refused to grant copyright for the stamps and suggested using another photo. The German government ordered the stamps destroyed, but a few sheets survived. The sheet being sold for charity is the one originally sent to Ferrer in 2001 for approval.
Five of the stamps, presumed stolen from the postal service, have been sold previously, with one fetching 173,000 euros.