Nice find Lars totally correct for a WD bike and dated for D Day! Here's the 1943 dated battery I found in France. Cleaned up with WD40 and an original top added. Ron
PS posted at the same time as Bastiaan. But I'm fairly sure they were painted in service colour by Lucas.
Indeed there are Gary, and most of the original batteries I've seen have remnants of paint. I spray my repos in service colour and I think it's a nice touch if they don't match the bikes as they where painted by Lucas. Ron