Colt Single Action Army revolver manufactured circa 1937 with desirable "Colt Frontier Six Shooter" barrel marking. The revolver has the Colt commercial blue finish on the barrel, ejector housing cylinder, trigger guard and back strap. The frame and loading gate are color casehardened. The trigger has a nitre blue finish and the hammer is blued with polished sides. The revolver has two-piece, black, checkered hard rubber grips with the Rampant Colt trademark embossed in an oval. The hammer spur has borderless knurling. The left side of the barrel is roll-stamped with the model designation: "COLT FRONTIER SIX SHOOTER .44/40". This marking was introduced in 1929 and was utilized into the 355,900 serial number range. This revolver is one of the very last Colt Single Actions manufactured with the famous "Colt Frontier Six Shooter" markings. The top of the barrel is roll-stamped with the legend: "COLT'S PT. F.A. MFG. Co. HARTFORD CT. U.S.A." in one line. The left side of the frame is roll-stamped with the Colt three-date/two-line patent marking followed by the Rampant Colt trademark. The left front trigger guard bow is stamped with a "4" assembler's mark above the Colt "Triangle/VP" proofmark. The serial number, "355944" is stamped on the bottom of the frame, the right side of the back strap and right side of the trigger guard beneath the grip. "355944" is scratched on the inside of both grips. All of the visible serial numbers match. The assembly number "620" is stamped on the inside of the loading gate and on the end of the right side of the frame beneath the grip.