S.C. Code Ann. § 17-5-30: Official oaths; commission.

Before the coroner is qualified to act, he must take and subscribe the constitutional oath of office and also the additional oath required by Section 8-3-20. When a person has been elected or designated for appointment to the office of coroner and has taken and subscribed the oaths and given the bond as required by law, the Governor must issue a commission to him accordingly.