Moosedog,
I'm new to the forum, but I noticed your post. I have a Model 2 Army I inherited from my father. It was manufactured very close to the time yours was. It too has all matching numbers, and I have a letter from S&W saying that mine (S/N 286xx) shipped to J.W. Storrs on August 26, 1864, and was part of a shipment of 75 units. Seems they were going out at a pretty good pace.