Matt, interesting information, thanks.

I based my supposition (guess) on the Webley & Scott Ltd. catalog, as well as a writeup on a Gibbs double rifle by Cal Pappas. Gibbs said that their customers rifle was sourced "in the white" from Webley & Scott then the necessary upgrades were done by Gibbs to bring it to their desired level of finish before delivery to their customer.

thanks for the clarification.
- Mike