A rare Lincoln-head penny a Massachusetts teenager received in change for his school lunch is up for auction. The 1943 penny, one of only about 20 to be pressed using bronze instead of the steel amid World War II shortages, came into the possession of 16-year-old coin collector Don Lutes, Jr., when he received it in change for his school lunch in 1947. Don, who had the coin authenticated in 1958 by expert Walter Breen during a New England Numismatic Association convention in Worcester, died in September of last year and the coin was given to Heritage to auction off. The auction ends today and began with an opening bid of $100,000. A similar 1943 bronze penny sold for $1.7 million in 2010. So it might go for more than just loose change.