Spirit Badges are a line of products used for identifying decanted beverages. They're generally punched into plain sheet metal. From there, many of them are aged in the Marianas Trench for as many as 30 years. They are not treated against future aging. They will continue to rust. The letters will become harder to read. You will come to know them from across the room.
They are listed one apiece. You can be sure that the one you see in the picture is the one you'll get, so be sure that you're satisfied with the patina.
The new model of spirit badge comes with a clasp to make its length adjustable, and makes it easier to put on wide-mouth decanters.