SC adds 600K new properties to unclaimed property website The South Carolina Treasurerâs Office said Tuesday more than 600,000 new properties were reported to the stateâs Unclaimed Property Program, including more than 3,500 rebate checks of $50 issued in 2019 as part of the Mega Millions lottery windfall. (Source: WCSC/WIS) By Patrick Phillips | March 9, 2021 at 12:59 PM EST - Updated March 10 at 4:41 AM COLUMBIA, S.C. (WCSC) - The South Carolina Treasurerâs Office said Tuesday more than 600,000 new properties were reported to the stateâs Unclaimed Property Program. The properties include more than 3,500 rebate checks of $50 issued in 2019 as part of the Mega Millions lottery windfall.