The Laidlaw Competition Car Collection, one of the finest collections of sports racing cars ever to be assembled by a single owner, will be auctioned in September, in London. Pre-auction estimates value the collection at around $23 million. The highlight of the collection is a 1955 Jaguar D-Type (pictured above), that is expected to sell for $8.5 million.

The collection was assembled by Lord Irvine Laidlaw, 70, a businessman and philanthropist, and one of Scotland’s most wealthy individuals.

Peter Wallman of RM Auctions, said: “This is unquestionably the finest single-owner collection of 1950s and 1960s competition cars to have ever been offered at public auction.”

Laidlaw’s long-nose 1955 Jaguar D-Type was originally a factory team car used as a backup for Le Mans that year, but it wasn’t raced until 1956 at Silverstone.

Another highlight are three Le Mans competitors: a 1966 Ferrari 275 GTB/C Berlinetta Competizione, a 1965 Porsche 904/6 and a 1960 Maserati Tipo 61.