'Thank you' for the replies, Chuck and Bruce. I should have remembered that this proof info was in TPS, which I do have; and the only excuses are that I'm over 60.... and... those guys put way too much info into those two volumes!
This particular gun here is lightly used in that it has about 50-60% factory case and about 95% of its original barrel coloring......so abuse or modification is not an issue. Will probably be back with another question or two if I close the deal today.
Again, my 'Thanks, and for the great photo as well, Bruce.
Rob Harris