S.C. Code Ann. § 11-15-250

In making such investment of sinking funds in securities other than those of the county in which such sinking fund was created the custodian shall advertise once a week for two weeks in one newspaper published in the county in which such a sinking fund is established or in a newspaper having a general circulation in such county for offers of sale of bonds of the issue for which the sinking fund is established and of bonds of political subdivisions of this State, with the right to reject any and all offers.