Took some more photos of these two, since you guys are right into them.
[Linked Image from i282.photobucket.com]
This one has a brass plate bolted on with 'Machine Reference 1448 (inside a black oval) and Made by Charles H Pugh, Birmingham England.'
[Linked Image from i282.photobucket.com]
And you were right, it has a squashed pipe on the exhaust. I have heard it referred to as a torpedo exhaust. You can almost make out the Villiers name on the base of the aircooling casting of the head.
[Linked Image from i282.photobucket.com]
The red clutch is from my third (spare parts) mower which has the same cast aluminium handles.


Mick
So many mowers, so little lawn.