If Harris Holland's serial numbers were sequential, you're probably looking at a muzzle-loader built around 1864 or so, when Holland was also making pinfire guns. That's late-ish for a muzzle-loader, though it also means they were at their peak of design and quality.
It has always been fascinating to me that in 1864 a sportsman had the choice of several popular systems to choose from, from percussion to pinfire, needlefire and centrefire.
So, if correct, that puts it just a few years before he took his nephew on as a partner.
I've been looking it over in more detail. I've managed to make out much of the writing on the rib..."? Holland 9?? New Bond Street, London"...which is correct from what I've read. I've also discovered that the right bore still has what looks like wadding in it and the ramrod only goes down about what I would guess to be a loaded chamber. I don't know that for certain of course, though it sure looks like wadding to keep the shot in place.
It has, what appears to be the original Ramrod, though the two keeper loops are missing. You can see where they were at one time though.
I will do some more work on cleaning it and get pictures posted soon.
Thanks for your help so far!
