I found this lock a couple years ago in my great grandfathers house. I know it's pretty old but I can't find any information on it. Can anyone please give me some information on this lock? I don't have a picture, I found one like it on ebay but I can't convert the format to post on this site. I can give you a discription on it. Engraved on the front of the lock it says 7 admiralty squire old english four brass levers genuine solid brass. Engraved on the back is JAS. Morgan & Sons LTD., Justin Square locksmiths by appointment.