SC has classic car plates with restrictions similar to Oregon & other places. I think they have been around for a looong time but the restrictions are newish. (Easier to amend the laws than withdraw the plates)
however, as a popular alternative: if you can find an original plate sporting the right year (& state) for your car, you can send the DMV a picture of it & they will register it, if there is no outstanding issues. ( I have heard other states offer this too)
i got my 1960 SC plate on eBay for $15.00. My registration is about $50.00 bucks a yr.