To Be OFFERED AT AUCTION at RM Sothebys' The Tegernsee Auction event, 4 July 2026.

€250,000 - €300,000 EUR One of just 78 aluminium-bodied Series I examples builtWell-documented chain of ownership from newPresented in its factory exterior colour Papyrus White over black leather upholsteryPowered by its matching-numbers 3.2-litre aluminium V-8 engine rated by the factory at 140 horsepowerAccompanied by an impressive array of original accessories, including its book set, jack, tool kit, and warning triangle in leather pouch Produced from 1956 to 1959, the BMW 503 was revealed alongside the 507 at the 1955 Frankfurt Motor Show.

Both cars were designed by the marque’s top designer, Count Albrecht von Goertz, as a “money no object” statement to show the world the company’s capabilities.Production of the full aluminium-bodied 503 Cabriolet began in 1956, featuring a tubular frame and an aluminium V-8 engine, all executed to a high level of craftsmanship.

Series I cars were distinguished ...