Heh, the commentary in the ad sounds like it was written by a cagey fraud lawyer, so that the descriptions can mean almost anything.
"...that was manufactured at Waffenfabrik Bern
if you accept the toggle as the manufacturer."
"The stock carvings are unique with the scrolling and pattern which
suggests that this Luger was a special order."
"Truly a remarkable gun made up for
some special order.
The above quotes had me rolling on the floor laughing.
The only honest thing they said was this:
"There were very few of these weapons produced and the majority of them were rebuilt from existing parts or conversions from surplus parts."
Yeah, like LAST WEEK.
That gun is a walking felony, as BATF sure doesn't recognize any of those bastard parts as being a legal stock arrangement.