Bidders paid $73,000 for 8,000 pieces of commemorative coins, jewelry and baseball cards in the state’s unclaimed property auction, Illinois Treasurer Michael Frerichs’ office said.  The week-long online sale closed Friday.  Among the winning bids were $12,052 for an Engelhard 10oz gold bar and $1,391 for a 1923D Saint Gaudens Double Eagle gold piece.  A lot that included a 1967 Mickey Mantle Topps baseball card, a 1966 Sandy Koufax Tops baseball card and a 1982 Baltimore Orioles Future Stars Topps baseball card that included Cal Ripken, Junior went for $467.  All items exceeded appraised estimates by an outside vendor.  Illinois has held such auctions for more than 15 years.  Total auction proceeds for calendar year 2015 are $392,000.  State law charges the Treasurer’s Office with securing unclaimed property, such as forgotten bank accounts, insurance proceeds, consumer refunds and unclaimed safe-deposit box contents.  Items are considered for auction after at least 10 years of unsuccessful attempts to contact the owner. If an item is auctioned, the value received will be held until claimed by the owner or heir.  Last year, one-in-four people who searched the unclaimed property database, often called I-Cash, found money or an item.  The average discovery was valued at $1,000.  Individuals can search the database by name at www.illinoistreasurer.gov Click on the I-Cash button.  Residents should check the website every six months because thousands of items are surrendered each year.  Treasurer Frerichs’ office never charges money to search or return unclaimed property.