Greg, I think that's probably too early a gun for it to be a Konor. I owned a Konor (briefly--you can see it on the Cabela's website I think, not a problem with the gun but rather with the shooter/gun combination!) and they're later guns. Rex and Sandhurst were not sideplated--or, as Coggie would have said, were not fitted with "ornamental strengthening plates". (I love that description!) I'm guessing it's some earlier iteration of the Avant Tout series, as indicated above.
FYI, Coggie did it backwards (as did Scott with their 700 numbering system) when it comes to the Avant Tout models Treblig listed above. The Konor (AT I) is the highest grade; the Rex (AT III) the lowest. Anyone looking for a dandy 20 bore Brit grouse and woodcock gun, Kirby Hoyt has a really nice Rex.
