Not a club butt fowler. Hudson Valley Fowler, early 1700's. Club butt fowlers and Hudson Valley Fowlers are very different guns. The standard reference these days is Flintlock Fowlers: The First Guns Made in America by Tom Grinslade. Take a look and you'll see the difference.Is this the same gun? http://contemporarymakers.blogspot.com/2012/01/ken-netting-fowler.html