Afternoon all

Just got back from the antiques & militaria fair at Birmingham motorcycle museum (was pleasantly surprised at how much antique/collectable airgun stuff there), with a new addition to my Weihrauch collection.



S/N one million one hundred and fourteen thousand range seems to be around 1988 (stamped made in West Germany so must be pre 1990).

My question is it has a peep style front sight, I've never seen this before, has someone replaced the original blade or was such a version ever made?
http://i62.tinypic.com/zuf24m.jpg
http://i60.tinypic.com/10p0njr.jpg

I haggled the dealer down from £185 to £155 so I thin kI've done fairly well. Any thoughts appreciated-thanks Andy