Here is a link to the rarest and probably the most famous modern day hawk that I know of. It is only the second I have ever seen for sale. LaGana made 500 of the first run and advertised them in the back of Popular Mechanics or Popular Science, can't remember which. Most were sold and used in Viet Nam. He did a second run of a few thousand for the GI's painted green, and I think he even did a short third run. These first though, are the rarest of the rare.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220705013902&ssPageName=STRK:MEWAX:IT