Me and a buddy of mine decided to try our luck at a long abandoned mine in Arizona last weekend. We split up and each went our own way. I found 2 Carhartt heart coverall buttons but he totally out did me when he came walking up the hill carrying this rifle. We have managed to kind of ID it as a Navy Arms 45-70 rolling block rifle. There are really no marks other than "476" stamped into the octagon barrel. We think this rifle is from the mid to late 1800's. It was just lying there about 4" in the dirt. He found it with his Tesoro Lobo. The hammer is pulled back like it was dropped during a re-load. There were high tensions in the area between the indians and miners in the day and we wonder if the owner died while fighting with it. It's been there for a real long time for the wood stock to decompose, if anybody has any information on this rifle it would be greatly appreciated. What a find.....