That's the patchbox of a Jacob Sell rifle. Sell was a gunsmith in Littlestown Pennsylvania (York County), he was a grand master of the Golden Age. This rifle is buried deep in a private collection.Frank
Not only do the counties change a lot, but in the Commonwealth of PA they have no power. My experience in PA was that the Townships were the relevant geographies and political entitities. And each was very independent. From you who live there do you find that so?? I usually find it more useful to know what township a rifle or builder was from than what county?
PA counties changed a lot.See:http://homepages.rootsweb.ancestry.com/~george/countyformations/pennsylvaniaformationmaps.html#Top