Did Spencer nickel plate any 1860 carbines at the factory? Given that I understand that no model 1860 was made after 1865 and that the first nickel plated guns in U.S. that I am aware of were made after 1865, around 1869-70, this seems unlikely, but I have been told that Spencer submitted a few nickel plated 1860 carbines to the U.S. Navy. Bottom line: did the Spencer factory ever nickel plate any 1860 carbines?