1955 Mercedes-Benz 300 SL Gullwing 12 January 2016 1955 Mercedes Benz 300 SL Gullwing (est. $1,100,000 – 1,500,000) Sold for $1,155,000 Auction: RM Sotheby’s Arizona sale, January 2016 Photo: Courtesy of RM Sotheby’s