BERLIN - A collector stands to make a tidy profit after discovering a rare stamp portraying movie star Audrey Hepburn smoking - one of a series that should have been incinerated by the German government. In 2001, the government printed 14 million Audrey Hepburn stamps as part of a series featuring movie stars including Charlie Chaplin, Marilyn Monroe and Greta Garbo. The print run was destroyed after Hepburns son, Sean Ferrer, objected to the cigarette holder dangling from the actress mouth and refused to grant copyright. But the Finance Ministry had already delivered advance copies of the Hepburn stamps to Deutsche Post for approval. Thirty of these proof copies escaped destruction when an unknown employee pocketed them and used them to send letters postmarked from Berlin. A minimum bid of US$41,959 has been set for the stamp - of which only five copies are known to exist - at its auction Tuesday at Berlins Kempinski Hotel Bristol. Agencies We can only guess that whoever took the Hepburn stamps from Deutsche Post didnt realize their value, thought they would save 55 cents and just used them on normal letters, auctioneer Andreas Schlegel told The Associated Press. The latest find is the fifth Hepburn stamp to surface since 2004. Schlegel said the rest probably ended up where most stamps do: in the trash can. Ferrer said he hoped the collector would use proceeds from the auction to support cancer research or anti-smoking campaigns. His movie star mother died of colon cancer in 1993. The collector has received so many sheets of stamps as presents that he cant pinpoint where the Hepburn stamp came from, and prefers to remain anonymous. Hes worried that if his picture is printed in the newspaper his friends will come to him and say, 'hey, you got that stamp from me, Schlegel said. -Agencies