Each year since 1955, Springfield Armory had rebuilt a number of Service pistols to provide Match-grade pistols for competitors and students at the National Matches. Some National Match pistols were sold by the Director of Civilian Marksmanship after the matches.
This particular pistol is a National Match pistol produced by the Rock Island Armory for use in the Camp Perry National Matches. According to Springfield Armory records only 3625 pistols were produced in 1967 and only 580 were sold to civilians through the DCM.
On the right side of the pistol you will see the Springfield Quality Assurance Stamp. These normally will wipe off after you clean the gun with some gun oil. Also note the National Match sticker that's wrapped around the trigger guard.