Thanks times two, Mike! Yep, that rifle's a brother to mine all right. I have a copy of Satterlee's book, 10 Old Gun Catalogs, that included the 1871 Great Western catalog. It appears that my rifle may be a No. 15, where the one on Gun Broker is a No. 17, the difference being the patent breech. My rifle came from the same shop as the TN rifle shown earlier, bought at the same time. From the excellent photos that Mike took, you can see the repair to the tang and the screw repair to the stock to the left side of the tang. And yes, the ancient percussion caps were in the cap box when I bought it.
David Kaiser
Montezuma, IA