The Navy Model is 36 caliber single action percussion revolver with a standard barrel length of 7 5/8 inches that was manufactured from the late 1850s through the early 1860s. The revolver went into production after Colt’s patent on his revolver mechanism expired in 1857. Interesting in that it is in the 4th type serial number range but has the E. Whitney barrel address. Generally fine condition overall retaining 85% original nickel on the barrel, frame, hammer and trigger guard with traces of case colors on loading lever. Nice grips with great cartouche. Excellent mechanics. Plain cylinder. A fine Civil War Era Whitney.