75 Pa. C.S. § 1357.1
Upon application of any person who was in the service of the United States Merchant Marine during World War II, the Korean War, the Vietnam Conflict or any of the Gulf Wars, including Operation Desert Storm, Operation Iraqi Freedom and Operation Desert Shield, accompanied by a fee of $20 which shall be in addition to the annual registration fee and by such documentation as the department shall require, the department shall issue to the person a special registration plate designating the vehicle so licensed as belonging to a person who was in the service of the United States Merchant Marine during World War II, the Korean War, the Vietnam Conflict or any of the Gulf Wars, including Operation Desert Storm, Operation Iraqi Freedom and Operation Desert Shield. The special registration plate may be used only on a passenger car or truck with a registered gross weight of not more than 14,000 pounds.
75 Pa.C.S. § 1357.1