So I'm doing some research on my old carry revolver; its a S&W 442-1 air weight in satin nickel SN puts production in january of 1996, right before they changed the satin nickel ones to the 642's. also the 1996's passed the 5000 round +p test, so it can shoot +p but it's not stamped as so. I've determined its a "short run" model, but thats all I can learn about it. SN starts with "CAF", anyone out there tell me any more about it? # like this produced? Rarity? Value? I can't find any on the market to compare it to. Thanks in advance.