S.D. Codified Laws § 32-5-77.2
A motor vehicle registered pursuant to § 32-5-77 may, in lieu of being issued number plates by the secretary, display original South Dakota number plates issued in the same year as the model year of the motor vehicle on which they are displayed. The number of the original plates and a color photograph of the original plates shall be provided to the secretary. The original plates must be in good condition and shall be used in pairs on a motor vehicle other than a motorcycle with one displayed in the front of the motor vehicle and one in the rear. However, a single original South Dakota number plate may be displayed on a motorcycle or on a motor vehicle if the model year of the motor vehicle is a year in which only single license plates were issued by the state, including 1945, 1946, 1947, 1948, 1952, or 1953. If a single original number plate is permitted, it shall be securely fastened to the rear of the historical motor vehicle in a horizontal and upright position. Original South Dakota number plates may not be used if the number on the original plate is identical to a number on any other plate in a numbering system used by the secretary. Any person using plates issued pursuant to § 32-5-77 shall return those plates to the secretary before substituting original plates. The secretary shall charge a ten dollar fee for registering the number on the original plates. Fees collected under the provisions of this section shall be credited to the state motor vehicle fund.
SDCL 32-5-77.2