this security six was made in 1982
http://www.ruger.com/service/productHistory/RE-SPSSix.html
paid just under 420$ otd for the security six & consider it a great deal cause the other example i wanted previously was 379$ plus transfer fees & was what i'd call a mid 7 on scale of 1-10 w/10 being nib. ss acquired yesterday would be a low to mid 9, but not completely perfect or unfired. a little attention & it will look even closer to new w/just a couple of barely noticeable spots of rust for this 30 yr old pistol. ie. just noticed them doing closer inspection w/bright flash light & know how to remove it.
on the gp100, had 2 buyers w/in 25 minutes of posting for sale ad & one was willing to offer more $ than was asking so he'd get it. was 1st responder anyways & insisted, cause it was such a smoking deal. i try & never talk someone out of giving me more money

i think my gp 357 was actually worth 420$+ also, but wanted to sell quickly to cover buying the six. regardless, i'm up on the gp & appears 419$ is the low end of the ss market, so 'if' i ever decided to let it go would resell for more $ than paid. however, this seems to be one of those pistols that you keep in the family where they're still making gp100s . actually i think they're 101s
i've learned the gp was made to take up the place of security six & specifically tuned for the 357 & higher pressure rounds. it appeared to be cast to me, where the security frame & cylinder look like billet or as though it was made from one block of steel. i guess i can research the ss & know for sure..... i understand ruger lost money selling them due to how much time was spent in production & quality of materials. guess ultimately turned out to be worth it for them, to get the leo recognition, they now currently hold.
i can see some wear near the pins where this one must of been taken apart to improve trigger; this can't be oem. too close to perfect & have read they weren't known for anything special w/trigger.