Gentlemen, I also have a C. Moore double. Ser. No. 1970, it has 27" barrels in 12 bore. One unusual feature is a grip safety that I find kind of cool. The barrel rib is engraved in script "C. Moore, 77 St. James Street, London". The locks are engraved with "C. Moore's Patent". It is in generally very good condition. It has been awhile since I posted pictures but I will give it a try. Best Regards, Jack