S.D. Codified Laws § 32-10-17.1
Alteration or forging of registration card prohibited--Violation as felony
No person may alter or forge, or may cause to be altered or forged, a vehicle registration card or other temporary registration device or copy thereof issued by the department pursuant to this chapter or chapter 32-9 . Any violation of this section is a Class 6 felony.
Source: SL 1988, ch 251, § 14; SL 1990, ch 230, § 8.