The National Japan Post is selling limited-edition stamps inspired by the Super worldMario. As you can see from the pictures attached to the news, the stamps resume the original Nintendo artwork by offering nice postal themed images. Additionally, if you receive an item shipped with one of these special stamps, a special stamp will be applied. Unfortunately, very similarly, a similar initiative will be taken out of the Japanese territory. Certainly, it is a valid collectable item for the enthusiasts. Source: My Nintendo NewsRelease Date: Founded in 1889