The factory letter lists the revolver in ".38 Colt" with a 7 1/2 inch barrel, blue finish, and rubber grips as a one gun a shipment on December 7, 1929 to Wayne Hardware Co. in Ft. Wayne, Indiana. The caliber in the letter represents the ".38 Colt Special" cartridge. This was Colt's version of the .38 S&W Special cartridge which is essentially identical other than the headstamp and a slightly different bullet shape much like the .38 Colt New Police was just a version of the .38 S&W Short. Other 1929 .38 Special revolvers have also lettered as ".38 Colt." The "Book of Colt Firearms" by R.L. Wilson states that only 82 Colt Single Action Revolvers were chambered for the .38 Colt Special cartridge. The cylinder has the matching partial serial number "78" on the rear face and has the shoulder in the chamber for the .38 Special cartridge. The left side of the barrel is roll-stamped with the "COLT SINGLE ACTION ARMY .38 SPECIAL" marking introduced in 1929. The top of the barrel is roll-stamped "COLT'S PT. F.A. MFG. Co. HARTFORD CT. U.S.A." in one line. The left side of the frame has the two-line, three patent date marking followed by the uncircled Rampant Colt trademark. The left side of the trigger guard has the number "3" and the Colt triangle factory proof. Matching serial numbers are on the frame and grip straps under the right grip panel, and the assembly number "719" is on the loading gate and rear of the frame. The revolver has the standard sights and is fitted with a very attractive pair of aftermarket stag grips.