Hey Pete,
I believe all his information came from the 2003 Standard Catalog of Firearms, and I also believe he is general gun dealer. Since I don't have a copy of that catalog, I'm not sure how they do the descriptions? It sounds like, based on his notes and listing - that they may lump all Post-wars into a "PX" category - where they have published the average market price of $3500 for that post-war variation.
However, for all that - he is a pleasure to deal with - speedy replies and well written notes (as oppossed to some "sellers" who provide cryptic answers, vague responses and send a note like it's an "imposition" to answer anything).
When this piece arrives and I have a chance to go through it and check it over - I'll try to post some further information. My problem is, though - when I start writing - I sort of do a "core dump" about "anything you always wanted to know about HKs - and never thought to ask"..
So it takes a while for me to do a "review" <img border="0" title="" alt="[Wink]" src="wink.gif" />
Best to you!
John