138: Colt Trooper MKIII in 357 Mag with 6" Barrel - Man 1969. This double action revolver features a 6" solid ribbed barrel, a smooth set of faux mother of pearl grips, adjustable rear sight, ramp front sight and a deep blued finish. The gun was manufactured in 1969 and remains in good condition with some wear to the barrel from holstering. Estimated Value: Low: $900 High: $1,100