Self-adhesive stamp

A self-adhesive stamp is a postage stamp with a pressure-sensitive adhesive that does not require moistening in order to adhere to paper. They are usually issued on a removable backing paper.

Stamp collectors have criticized the format, because the rubber-based adhesive used tends to yellow the stamps progressively. It makes stamps difficult to remove from covers, and to save in mint condition, though self-adhesives of recent years have improved in these respects.

Artistamps have also been issued in a self-adhesive format.