We don’t often run across items we've never seen or heard of before, but this is one of those times. In all fairness though, I don't know how you would identify these if you didn't also have the original envelope and an order form. The Cardinals team name and STL logo in felt. The order form has the option to order other team insignas, or numbers and letters so you make your own. The envelope is a postage paid envelope, so there is no postmark to help us get an exact date. Don't wait until the next time you see one to bid, because that may not happen.