"Additional info: Acid etched badge, serial number range MSP0001-MSP0631, 120th commemorative year, 631 manufactured in 1986, Product Code 103504.
However, the s/n on your box appears to be a "regular" s/n. I don't know what this means - maybe a production overrun without the badge or special markings?
Perhaps someone else has more knowledge."
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Lorin,
Thanks for the reply. Would you have any idea what the codes would be for a normal model 586 with a 6" barrel (like the one pictured below), regular trigger and hammer (not target and smooth trigger), regular sights (S&W micrometer click sight with plain blade, no white outline), red ramp on front (Baughman?), square butt with the usual wooden grips (checkered Goncalo Alves Target with speed loader cutaway). Serial #AEL64XX which I believe would have been made mid-1984? Since it does have a red ramp (Baughman?) front sight I would have thought it would have had a white outline rear (maybe not original).
Thanks again!