Probably the blue box, as that's a pretty late gun to have arrived in a gold box, however there's no real formulae for deciding which box is correct for S&W revolvers, as what ever box happened to be on hand when the guns went to the vault, got the gun. There are post WW2 shipped guns that went out the door in WW1 era boxes, because a trove of old boxes happened to be uncovered somewhere and S&W seldom threw away anything they could still use. Ed.