The original "good book" at AC list all the chassis numbers and has the original order/build sheets for the MK IVs.....sadly, it is now probably stored away or even lost in the numerous "midnight moves" of the aforementioned Mr. L.
The book even holds a VERY RARE picture of the Muck guy, in a TUX, in front of AK 013. I guess Brian was so amused, he had to save it for posterity!
Whatsa, gotta go see your new film, "V for Vendetta".......
Rick