[superman15]

What would a mint in original box Nickel Colt Trooper Mark V 4in go for

 

[ralph7]

Here is what a blued one brought.
Rare Colt Trooper MK V 4" 357 Magnum Revolver 5 : Revolvers at GunBroker.com

Here is a nickeled one sans box.
Colt Trooper MK V .357 Magnum Revolver in Nickel : Revolvers at GunBroker.com