S.C. Code Ann. § 56-19-310: Numbering certificates issued to successive owners; two transfers when auctioneer gives title.

The certificate of title issued to the first owner of a new vehicle must be designated by the letter suffix "A" after the title number. Titles issued to subsequent owners of such a vehicle must be designated "B", "C", "D", and "E" in the order of ownership. Titles issued to subsequent owners shall contain no letter suffix.