👉 In the context of stamping, a "superstamp" is an additional layer or feature added to a standard stamp. These layers can be used for various purposes such as enhancing readability, making it easier to recognize, or adding visual interest. For example, in the case of the United States Postal Service's 1960s stamp series, there were several superstamps that allowed for additional features like the "Super Postmaster General" stamp featuring a large red heart. These stamps were
