Th ecaption says October 1940. But was the steel motor cyclist helmet not introduced late 1942 and made its way to motorcyclists only in 1943?
So the picture was taken in 1943 or later, imho.
And have a good New Year.
Rob
My plans for 2012: to get both 16H's on the road, get petrol tanks in repro for my Welbike and finsih that one, and at least get one of my ML's and RE 125 on the road too.