As confirmed by the included Colt factory letter, this pistol was an experimental pistol kept by the Colt factory. The letter also confirms caliber, barrel length, finish, and checkered wood grips. Has fixed sights, with "COLT'S GOVERNMENT MODEL" on the right side of slide and two line model marking over "9 mm LUGER CALIBER" with Rampant Colt on the left side. One line Hartford address and serial number on the rights side of frame.