That's a Polish army BSA in the photo Ron posted. In the photo below you also see Polish army BSA's and the bike on the left seems to have the same gray cylinder head.
Hello All, I have been looking at the early WM20 photo with interest, particularly the handlebar controls they almost look chrome finish. Can anyone tell me what should be fitted as I have a wm20 from the same contract C4344363 which I want to return to original condition as possible. Thanks Mike.