From Team Fortress Wiki
Map Stamps are a donation mechanic added to the Mann Co. Store during the Australian Christmas update. Each Map Stamp corresponds to a community-made map which can be purchased from the store; all proceeds (minus applicable tax) from the sale of Map Stamps go directly to the creator(s) of the community map the Map Stamp was purchased for.
Upon purchase of a Map Stamp, players receive the World Traveler's Hat – which shows a special particle effect when the user is playing on a map linked to the Map Stamp that was bought at the store. All Map Stamps - even for different maps - are tracked by the same hat. Upon loading a community map, the player may see a list of top donors for that particular map.
Purchasing all map stamps in a bundle costs less than purchasing them all separately.
Available Map Stamps
|Coldfront||0.99 / 0.59 / 0.74 / 30 / 0.99||Coldfront|
|Egypt||0.99 / 0.59 / 0.74 / 30 / 0.99||Egypt|
|Fastlane||0.99 / 0.59 / 0.74 / 30 / 0.99||Fastlane|
|Freight||0.99 / 0.59 / 0.74 / 30 / 0.99||Freight|
|Frontier||0.99 / 0.59 / 0.74 / 30 / 0.99||Frontier|
|Gullywash||0.99 / 0.59 / 0.74 / 30 / 0.99||Gullywash|
|Harvest||0.99 / 0.59 / 0.74 / 30 / 0.99||Harvest|
|Hoodoo||0.99 / 0.59 / 0.74 / 30 / 0.99||Hoodoo|
|Junction||0.99 / 0.59 / 0.74 / 30 / 0.99||Junction|
|Kong King||0.99 / 0.59 / 0.74 / 30 / 0.99||Kong King|
|Lakeside||0.99 / 0.59 / 0.74 / 30 / 0.99||Lakeside|
|Mann Manor||0.99 / 0.59 / 0.74 / 30 / 0.99||Mann Manor|
|Mountain Lab||0.99 / 0.59 / 0.74 / 30 / 0.99||Mountain Lab|
|Nightfall||0.99 / 0.59 / 0.74 / 30 / 0.99||Nightfall|
|Offblast||0.99 / 0.59 / 0.74 / 30 / 0.99||Offblast|
|Steel||0.99 / 0.59 / 0.74 / 30 / 0.99||Steel|
|Turbine||0.99 / 0.59 / 0.74 / 30 / 0.99||Turbine|
|Watchtower||0.99 / 0.59 / 0.74 / 30 / 0.99||Watchtower|
|Yukon||0.99 / 0.59 / 0.74 / 30 / 0.99||Yukon|
|Map Stamps Collection||14.99 / 10.99 / 11.99 / 450 / 14.99|
- [Undocumented] Added Map Stamps: Coldfront, Egypt, Fastlane, Freight, Harvest, Hoodoo, Junction, Mann Manor, Mountain Lab, Offblast, Steel, Turbine, Watchtower, and Yukon.
- [Undocumented] Added Map Stamps Collection.
- Fixed the alpha channel for CP_Yukon's donation stamp.
- [Undocumented] Added Map Stamps: Lakeside, Frontier, and Nightfall.
- [Undocumented] Updated Map Stamps Collection to include Lakeside, Frontier, and Nightfall Map Stamps.
- Fixed the Map Stamps Collection bundle missing in the store.
- Added Map Stamp: Gullywash
- [Undocumented] Updated Map Stamps Collection to include Gullywash Map Stamps.
- Added daily a periodic reward hat for map stamps bought.
- [Undocumented] Added Map Stamp: Kong King
- [Undocumented] Updated Map Stamps Collection to include Kong King Map Stamps.
- Fixed the missing Kong King map stamp image in the Mann Co. Store.
- Added checkout dialogs and taunt-activated effect to raise awareness for Community Map Stamps.
- [Undocumented] Fixed background errors in Map Stamp - Kong King backpack icon.
- It would take $99 to max out 1 Map Stamp's level. To reach the max level for all official maps, it would take $980.
- All the Map Stamps, including the Map Stamps Collection, are level 50.
- Every day, the Philateler hat is given out to the player who bought the most map stamps worldwide the day before.
- http://stamps.geit.co.uk – Tracks Map Stamp purchases by map, along with graphs to view trends.