シルバーホーク
Matchless Silver Hawk is a Bert Collier designed motorcycle produced by Matchless for 1931 and introduced at the 1930 Motorcycle Show at Olympia, London as their range-leading luxury model. It was one of two up-market four-cylinder machines introduced during the 1930 Show season from two manufacturers; the Silver Hawk whose production would last less than four years and the Ariel Square Four, whose production lasted until 1959. Other British manufacturers produced 4-cylinder machines in small quantities in the 1930s, including Brough Superior's Austin-engined BS4 (11 built 1932-34) and the prototype Golden Dream (2 built in 1938).