Just visited a small Saturday auto jumble, came across a Two stroke cylinder barrel...JUG... im guessing it was around the 250 to 350 ccs capacity It was equipped with a inlet manifold and a BING carb. Barrel was egg shaped in profile had typical piston ported layout but it had a decompresser port about 12mm down the bore had a thread on the outside for a decomp valve. Looked sort of 1950s early 1960 by the fin style a little like a BSA bantam D1 D3 sort of profile. Exhaust port had an internal thread for the exhaust flange. Seller had no idea what it was off but came with a whole load of AMC greeves and Villiers 9E stuff. Typically i had no phone with me to take a picture of it. Know its a super long shot but by my description anybody offer a suggestion what the barrel came off.