13245 shipped on 1/2/01 and is definitely a U. S. Army purchase. The barrel caliber stamping should be "S&W 38 MIL".

Both S&W and Colt submitted heavy-frame .45 revolvers to the Army's 1907 pistol and revolver trials. Colt won (and their revolver was adopted as the Model 1909) and used for Philippine service. S&W lost. That may be what you are referring to.