Now that I've got that out I've got a couple more specific questions & info about myself. It's got a couple small pits here & there + holster wear, though as far as I can tell, all moving parts are tight fitting & move freely/as designed. Can't get a pic atm, but it's a 5.5' with black checkered grips, drift sight etc. (the only chart I've seen seemed to require least 6 digits) It's a #54509, which I assume hasn't had the update done due to its need to be half-cocked for loading. (if I am, my apologies! ) Anywho, I inherited what I believe to be an older model 3 screw & due to the serial number being 5-digits, don't understand how to look up the estimated age. First post, (as well as first gun of my own), so hope I'm not breaking rules with this grave-dig.