1931 Indian 402

US$153,959 (sold for GBP90,000) Indian is best known for its V twins, but in 1927 it purchased Bill Hendersons Ace Motor Company and began producing four cylinder machines based on the Ace. The Henderson bothers had previously produced Henderson motorcycles, then sold out to Excelsior, which was eventually closed down too. In July 1928, Indian introduced the 401 series, before upgrading it to the 402 series in 1929. This bike is a late 402 made in 1931 which has lived the majority of its life in an Italian collection.