S.D. Codified Laws § 32-6B-21
The department shall issue metal numerical license plates to licensed dealers upon application and payment of a one hundred one dollar yearly fee to be paid at the time of the annual review date for each set desired. The fees shall be distributed in the manner specified in §§ 32-11-2 and 32-11-4.1 to 32-11-9, inclusive. The license plates shall be numbered consecutively and shall bear as a prefix the number 77. The plates may be issued for a multiple year period. If a dealer's license is revoked or canceled or the dealer goes out of business the 77 plates shall be returned to the department. If any person operates a motor vehicle with 77 plates after the dealer license is revoked or canceled or after the dealer goes out of business, or if the person refuses to return the plates, the person is guilty of a Class 2 misdemeanor.
SDCL 32-6B-21