Hunting around on line, these are the very cranks- Campagnolo Sport:
http://imagehost.vendio.com/c/3561856/view/campy_steel_crankset.jpg
Here is another set:
http://www.flickr.com/photos/23666168@N04/6477223433/
I have only ever seen the one example in person...
My custom 1996 All-Rounder is at the top of the page here:
http://members.bitstream.net/~timmcn/tour2000.html
but there are some changes since then. The most noticeable is that it now has a Nitto small front rack, a Bertoud Mini 86 front bag. Other changes include Frogs, SunTour Superbe Pro rear derailleur and friction downtube shifter, and there is a Sanyo generator mounted to the Nitto rack because it wouldn't fit onto the chainstays as originally designed, due to the unusual bends of the A/R stays. I use Pasela 16 x 1.25 tires on it. The Nelson is on another bike. The A/R is such a wonderful bike to ride!
You may notice that it is obviously much too small by Riv standards. When I bought it, my intent had been for it to be a road and MTB with a switch of wheels and I used it as such for a few years; it was sized small to provide top tube clearance with my bits and pieces. With a set of 1.95" knobbies it was a good trail bike, but I really don't enjoy mountain biking all that much and eventually it became a road bike. In retrospect I should have known better and gotten a 62-63. Grant tried to convince me, pointing out that the TT clearance issue even in MTBs is over-rated. Oh well, live and learn. This one still works great with a Nitto Tech Deluxe stem raised up high enough.
Tim