I lifted it from cod'ead's flickr photostream.
It looks legit. If you can confirm the authenticity of this snap, pleas drop me a line. Löst Jimmy, Joe Petagno, Alan Burridge and/or any member of Motörheadbanger (the official fan club) I'm counting on you guys for this one.
Here's a pic Of Lemmy & Wruzel from the official Motörhead website forum. There's a few more pics of Wurzel playing with (what looks to be) a high school band if you're interested..