SPRINGFIELD, Ill. (AP) — Rare coins, a 10-ounce bar of gold and vintage baseball cards are among the thousands of items of unclaimed property that will soon be available for purchase from the Illinois treasurer’s office. The five-day online auction begins Monday, but prospective buyers can preview the 8,000 items for sale at www.illinoistreasurer.gov. The state treasurer is the custodian of unclaimed property such as forgotten safe deposit boxes and lost bank accounts. Auction items have been in the state’s possession for at least 10 years. Proceeds from the sale are held until the rightful owners are identified. Illinois Treasurer Michael Frerichs’ office says the auction items are collectively worth $70,000. The sale includes a 1967 Mickey Mantle Topps baseball card and a 1966 Sandy Koufax Topps card.