Mike's Exchange is standard etching on all my vinyls, so is the XDUST serial no.
Mike Marsh is the guy whose been mastering a lot of their records (I think I saw him credited on the WATN sleeve too) - at The Exchange.
I'm guessing most of the (original) vinyls which don't have the funny etchings are the US or other foreign versions, since all my american versions don't have these.
Only if Ed would revisit here and clear up more things.
Whirly - thanks for putting up that pic - puts this thread into perspective for the non vinyl fans here.
Owa - thanks for the Loud input! Haha! My personal fav's still "Serenity Now" - it's so fuckin apt for one of my fav albums.