Hi all. Happy to be a part of this group! While new in here, I'm a long time fan of S&W. I have a 586 (no dash) that I carried with my LE agency in the 1980s. The department was carrying Mod. 66s at the time but SWAT members were issued the blued 586. Our range master then tuned our 586s for each of us. My guys bought it for me when I retired. Finest shooting handgun I've ever owned. Anyway, I'd like to know the production date for mine. it was SN# ADM-5312M. Thank you for any help!