Sellers in this category are offering expired license plates for sale, as collectibles, which were officially sanctioned by the proper issuing authority and manufactured during the period of intended original use as depicted by the validation marking on the plate, tab, or decal as appropriate.
Sellers in this category are offering custom-made souvenir or "booster" plates that are produced for decorative purposes. They may include names, witty sayings, university or sports logos, and so on. They may also be unofficial, unsanctioned replicas of vehicle license plates.
Sellers in this category are offering the rights to register certain distinctive plate numbers to buyers' vehicles. The value is not so much in the physical plate itself as the privilege to use a particular number on a vehicle.