Thanks Erich, I thought the same, and had some doubts, about it being an A-4, due to the cannons. I couldn't find the other pics I've seen/have of it in enoug time to get the post up. So it IS a 1/JG1 bird - again, I had doubts about it being captioned (the pic) as a IV/JG1 kite, as I couldn't see a Gruppe marking. But, this particular pic came from the old Heinz Nowarra book, which has a number of misleading (? strange!) photo captions. There is one that declares "...Fw190's in the Battle of Britain..."!! I gave the benefit of the doubt to something being lost in the translation from German!
Terry.