As I posted on the general forum, I recently acquired an unfired series 70 government model. I was told it was unique, but thought I would ask some of you Colt experts. It has a serial number that starts with SM. Any ideas or info? Also, my wife says it needs to stay unfired, and I guess she is right, at least until I find out more info, but it will kill me if I can't! I really would like to use it as a carry gun. I don't think I would do any modifications (most of mine have a great deal of them)except maybe sights so as not to detract from the value. What say you?