HI Jerry and other phillata..., eh, fillate..., eh stamp collectors! I checked with our resident expert, who researched the answer: Reproduction of stamps is kosher if: 1) the stamp is reproduced in black and white OR 2) the stamp is reproduced in color in an obviously different size than the original. Color reproduction of a stamp in the same size is considered counterfeiting and is illegal (simialr to making color photocopies of currency). Sincerely, Aaron Morris