The Colt Single Action Army in .44-40 W.C.F. was named the "Frontier Six Shooter" after J.P. Moore's Sons ordered some in 1878. Single actions in .44-40 were particularly desirable in the West because they could use the same ammunition as the popular Winchester Model 1873 rifles and carbines. This specific example was actually shipped to Winchester, as documented in the factory letter, furthering its desirability. During the period the large manufacturers, including Colt and Winchester, often ordered arms from the other to supply their preferred large retailers and distributors in an effort to be their sole supplier, with this revolver likely an example of that. The included factory letter confirms the current configuration (grips not listed), as well as shipment to Winchester Repeating Arms Co. on 15 August 1904 in a 24 gun shipment. The top of the barrel is marked with the standard single-line address while the left has the "COLT FRONTIER SIX SHOOTER" marking. The standard two-line patent dates followed by the circled Rampant Colt are on the left of the frame. The matching serial number is on the bottom of the frame, trigger guard, and back strap, and the assembly number "6025" is marked inside the loading gate. It is fitted with a blade front sight, groove rear sight, and a pair of non-factory replacement walnuts grips carved with a checkerboard pattern at the tops and starbursts at the bottoms.

Very fine, retains 75% plus of the original blue finish and 70% of the vibrant original case colors with the balance having thinned to mostly a smooth grey patina, primarily in the form of holster and handling wear. The period replacement grips are also very good with some scattered light handling marks. Mechanically excellent.