This Matchless G15CSR, along with 21 other vintage motorcycles has been on display since May at The Northwoods Petroleum and Motorsports Museum in Three Lakes, Wisconsin. In 1964, Matchless and Norton were both owned by AMC in England. Matchless was on the verge of going bankrupt and for the next three years used the famous reliable Norton 750cc Atlas engines. They were stock right from the factory and were titled as Matchless. There were very few manufactured for the next three years and in 1967, according to my research, less than 500 and possibly less than 200 were built. This Matchless should be worth more than a Norton in similar shape due to scarcity.