Hello everyone.... Im new to pistols period. Ive always been fascinated with guns but never really got into them, and well now im starting. I recently got a Colt MKIV series 70 gold cup national match. Im not sure about the serial number if it is the serial number it is on the right side of gun right under the trigger and it reads SM31534 and there are sum unusuall proofmarks on the left side on the trigger rail or whatever you would call it... Any help im interested in knowing as much about this gun as possible, ive already went to the links you have provided for proofing and could not find mine.. How do i go about posting pics on here and i will be happy to do so...