Sometimes, a barn find yields rare gems, like this 1956 Maserati A6G/54 GranSport coupe, which is expected to bring $2.5-$3.25 million at the Gooding & Company Pebble Beach Auction in mid-August. The car is one of 60 built in the A6G/54 series, and one of four built in this coupe style by Carrozzeria Frua.
