Hi Peter
Thanks for your above post.
I am a long time collector of Boundy mowers, and am looking for any
information on the last of the line Patrols, ie. the 4 stroke model.
We do know they were fitted with B&S engines as listed, in a modified and revised
alloy base from the previous Model 9 series 2 stroke.
We also know they were released sometime in 1960 and continued
until their demise alongside the Patrol models 8 and 9.
There can only have been a handful of them released which certainly
makes them a rare bird indeed.
Any info you may have would be most welcome.
Cheers... Ajay