I am thinking of trading a Marlin 336c that is in excellent condition for a Colt 1911. I purchased it new in the early seventies, serial # 720680XX. It has had approx. 125 rds. fired through it and was in the woods three times, its true. I don't care anything about shooting an animal anymore, so it has been sitting in my closet. Before going to the gunshop, I am trying to get an idea of what to accept as a reasonable offer. Any help would be appreciated.