S.C. Code Ann. § 27-18-170: Contents of safe deposit boxes or other safekeeping repositories.

All tangible and intangible property held in a safe deposit box or any other safekeeping repository in this State in the ordinary course of the holder's business and proceeds resulting from the sale of the property permitted by other law, which remain unclaimed by the owner for more than five years after the lease or rental period on the box or other repository has expired, are presumed abandoned.