Thanks for the info on Darne Halifax's powder proofing you posted as an aid to dating the gun. The one I saw in a London UK museum was a double gun with a sliding breech and it had lots of filigree on it but otherwise it looked a lot like mine and it had a date of late 1890's on it's display-case nameplate. that's why I ask the question. Here are the photos, I have. Since they were taken I have cleaned up the gun quite a lot and have repaired the horn buttplate. I am taking it to a gunsmith later this week to get a worn pin in the breech release handle changed but I don't think I'll ask for any other work. Let me know if you see something that should be done, please. (I don't want the cost of smithy work to get away from me unless it's absolutely necessary)
