Viva La Gullwing: 1957 Mercedes-Benz 300SL Gullwing Originally delivered to Havana Cuba. Lost and Found after 40 Years Incredible 1957 Mercedes-Benz 300SL Gullwing originally delivered to Havana Cuba. Lost and Found after 40 years. An unbelievable discovery that's never been restored. Available for sale for the first time since 1958. Price:1,200,000