1955 Mercedes-Benz 300 SL Alloy Gullwing expected to command up to $9M

This 1955 Mercedes-Benz 300 SL Gullwing has something special hidden beneath its silver paint. Scheduled to cross the auction block with RM Sotheby’s in Phoenix Jan. 27, it’s one of just 29 Alloy Gullwing coupes, and is expected to sell for $7 million to $9 million. Formally known as the “Leichtmetallausführung” or “Light Metal Version,” the…