I bought a leather and oak shotgun case and among other goodies inside was a L.E. brass oiler. They're collectible but not crazy expensive from the one's I've seen - averaging around $30(?) They are highly functional though and keep mine in my range kit.
This thread inspired me to a google search and seems mine is a Mk IV made by J.J. Bent & Co. Its one of those things that around Remembrance Day you wonder what stories could be told if only it could talk. (or maybe be careful what you wish for)