Earlier models were finished with chrome on the fuel tank and lower fork link but towards the end of production in 1952 this was replaced by grey paint.

[4] There is a debate about the number of Vincent Grey Flash motorcycles produced as although the official register lists thirty one, several are known to have been rebuilt.

[5] He made his first headlines in 1951 when he gave Norton star Geoff Duke a strong challenge in an ACU race at the Thruxton Circuit[5] In 1952 John Surtees set a new lap record on his first outing of the season at Brands Hatch[6] and throughout the early 1950s was virtually unbeatable on his Vincent Grey Flash racer.

Only one of the four Grey Flashes, (ridden by works racer Ken Bills), finished the race in 12th place.

[9] The Australian National Motor Museum of road transport history in Birdwood, South Australia has a 1950 Grey Flash.