The "dull, grey, case-colored finish" that Olgrouser refers to is very likely to be what remains after 120-years (115 in this case) of service. The much-harder blued components remain very much as they were, but the case-hardened metal has worn and softened to a dull silver, with hints of color remaining in the deeper parts of the engraving and perhaps some of the more-protected metal under the forend. I have come to expect it, especially on a workhorse such as this gun. You can have a gun like this refinished by re-case coloring and rebluing the furniture, but why? When I see a gun like this one redone in that fashion (tarted-up?), I immediately wonder if there were issues that are being concealed. Even with proper care over the years, good, honest wear is to be expected and even...appreciated.
Note the absence of drop points and intercepting sear pins on this gun, and only 5 years "newer" than your Evans. Most likely evidence of this Birmingham sourced W. Richards being considered a "good" gun at the time, with the London-sourced Evans being a "best" gun.