Hello, bought a 12 gauge double at an auction in Red Deer Alberta Canada. Boxlock non ejector, marked "JS Perrins" in scroll on sides, right barrel "15 St Mary's Row, Birmingham", left barrel top "William Ford", top of action flats under barrel, "W. Ford" and "13", tang extension behind triggerguard "No. 2747". Haven't fired it yet, it's in good to very good condition, interesting chambers, very long with sharp edge where forcing cone should be. (brass shells?) I would appreciate any and all information. I know William Ford was a barrelmaker at the above address, be interested to hear about the Perrin's connection