I have one! I think they made about 100. The revolver is currently getting new stocks, sight replacement, and an action job so I have not shot it yet. The fiber optics sights likely turned a few off but they are easy to replace. Nice gun, at 36.4oz it's about 5oz heavier than my 6.5in Blued 32H&R Single Six due to the stainless steel grip frame. Throats are 0.312in. Holds well, nice job Ruger. I don't understand why these were a short run.
More info here:
http://www.rugerforum.com/phpBB3/viewtopic.php?f=3&t=235983
Here's one:
http://www.gunbroker.com/item/581856710