Map Stamp
Stamps are an item for purchase in the Mann Co. Store. When purchased, the proceeds go "directly to hard-working Team Fortress 2 map makers". Upon purchasing a stamp, you will receive the World Traveler's Hat which will show a particular effect on the map that corresponds to the stamp you bought. Current stamps available for purchase and Steel, Yukon, Coldfront, Yukon, Watchtower, Egypt, Mann Manor, and Mountain Lab