Prepared by Syd Lawton using a factory pre production prototype 700cc Constellation engine for Bob McIntyre and his co rider Derek Powell to use for the 1958 Thruxton 500 mile endurance race.
They finished in second place behind Mike Hailwood and Dan Shorey riding a Triumph . The Royal Enfield duo would have won the race but for having to spend much time in the pits replacing a split petrol tank.
The bike was restored by Performance Classics in 2008.
It comes with various newspaper articles and the original buff log book showing the first owners Lawton and Wilson. Also there are two videos showing the bike being ridden by restorer Paul Henshaw.
The bike is in excellent usable condition.
This presents a very rare opportunity to acquire a motorcycle ridden by Bob McIntyre and with proven provenance