Re: Here\'s pictures
the vp stands for verified proof, all colt guns post 1905 were so marked to show they had been proof tested. the x at rear t/g is an inspectors stamp, there are usally several single letter inspectors stamps at different locations: on frame under stocks and in the crane area and left side rear t/g. a rework stamp is sometimes found at right rear t/g when gun has been back to colt for service i think amperstand is most common. still a nice example i recently bought a simular gun , condition was not nearly as good with 7.5 in bbl for 375$.