S.C. Code Ann. § 56-3-2210: Department of Motor Vehicles may classify certain motor vehicles as antique.

Every motor vehicle as herein defined which is over twenty-five years old, is owned solely as a collector's item and is used for participation in club activities, exhibits, tours, parades, and similar uses, but in no event used for general transportation, may be classified by the Department of Motor Vehicles as an antique motor vehicle.