Abstract: Postage stamp assembly includes a backing substrate having a front face and indicia relating to a game of chance on the front face, a postage stamp having a printed postage value thereon, and adhesive for removably adhering the postage stamp to the front face of the backing substrate. The indicia relating to a game of chance is exposed only when the postage stamp is removed from the backing substrate. The postage stamps are sold at a price higher than the printed postage value and money from the difference between the printed postage value of the postage stamps and the price thereof forms a pool, at least a part of which is used for prizes for the game of chance. Part of the pool might also be used for a charitable purpose or societal benefit, and an indication to this effect printed on the postage stamps.