sold for a trials project but looks all WD G3L to me, see his other stuff, a new head and cylinder in a box.

no connection but not far from me so I could help with collection if needed.

http://www.ebay.co.uk/itm/Matchless-G3L-bits-to-make-a-trials-bike-/181383251935?pt=UK_Motorcycle_Parts_13&hash=item2a3b48c7df