Official, not yet released Lowriders postage stamps Forever. 78 value each Will be shipped out on the official release date of 03/13/2016 15 count sheet at .78 cents each Celebrate a culture that originated in the working-class Mexican American/Chicano communities throughout the American Southwest with the Lowriders Forever@ 15, stamps. Available in sheets of , these stamps showcase 5 dazzling car models.