The only limited series guns i can think of that are worth anything beyound the normal versions are the winchester 1873's in the 1in100 and 1in1000 promotions from the 1800's.
Take it out shoot it enjoy it because if its value does go up it wont be in your lifetime or grand children's lifetime
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent