#1 Trivia, that's the largest bore in any of the "B" barrel contours - so probably one of the lightest 26" barreled #1's.
Relatively uncommon, somewhere between 275 and 350 were made for a distributor in 1989. Those who have actually shot them report they shoot very well. Not as rare as my .475 Turnbull, but somewhat more appropriate for Texas deer
I ordered brass, bullets and dies for it this morning. Not sure if I will scope it or not.