C 397387 almost certainly shipped in 1957. The closest SN on my list is C 4023xx which shipped in 9/57. As it was made just prior to S&W's use of model number designations (which started around SN C 437xxx), many collectors would call it a pre-Model 10. But S&W called it the Military and Police Model.
Last edited by DWalt; 05-18-2017 at 11:40 PM.
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