Abstract: A system for applying a stamp to packs within a carton includes a conveyor drum system including a plurality of clamps and a floor plate positioned adjacent the clamps. The system further includes a carton opening system positioned at a first station along the conveyor drum system, a pack stamping system positioned at a second station along the conveyor drum system, and a carton closing system positioned at a third station along the conveyor drum system. The clamps are opened to receive at least one carton and the floor plate moves upward to position the packs at a predetermined operating distance and wherein the clamps are closed to hold the carton at the predetermined operating distance while the carton is rotated through the carton opening system, pack opening system and carton closing system.