Another villiers? ID needed

[Mike48]

In discussion with a fellow enthusiast from Sydney, he mentioned he had an old engine which he thinks is a villiers, and asked me to identify it. It looks a lot like a 12C with twin exhaust stubs, but has a separate cyl head. Bore is approx 66mm, stroke 75mm.
Engine no AXF 3316
Barrell is lettered XV1A.
It has a squish piston, and the cyl head is 3 bolted.
I wouldn't have a clue what it is!
Any ideas?
Mike

[John Wakefield]

Its an XV1-A 247cc from 1934-40. it should be 67 x 70mm I attach a copy of the relevent pages from The Villiers Engine by B.E.Browning (now long out of print)

[Mike48]

Thanks very much from both of us, John. My friend still doesn't know what to do with it, but at least he knows what it is now.

Mike