The alloy timing chest cover and the rubber handlebar mountings point to this being an early W/NG which ties up with the frame number according to the Orchard/Madden books (the WD bibles!). As far as the tank is concerned, again the early ones had knee rubbers (before things hotted up in Burma) and I thought W/NGs had the badges (no screws, they were riveted I believe) all the way through the war but I stand to be corrected on that. It's the same shape as my W/NG and the lining could have been added in an attempt to lightly civilianise after the war, which is probably when the pillion seat and footrests were added which didn't come along until later. Then again, the tank could indeed be early post war. Either way, it's a cracking good find! You must do with it whatever takes your fancy. I've got mine in Greenlane trim, for which, with the original gearing, it's absolutely perfect!