1955 Mercedes-Benz 300 SL Alloy Gullwing 7 May 2022 1955 Mercedes-Benz 300 SL Alloy Gullwing Estimate: $7,000,000 to $9,000,000 Auction: RM Sotheby’s Monterey 2022 classic car auction Darin Schnabel ©2022 Courtesy of RM Sotheby’s