Ames manufactured only 4,250 of these distinctive "mule ear" carbines between 1843 and 1846. "Wm JENKS" and "USN/RP/P/1845" marked on the top of the barrel at the breech ahead of the oval loading aperture. Small inspection marks are on several components. The lock plate has the Ames three-line marking in the center and "Wm JENKS" towards the rear. A sling ring is mounted on the lower tang. The stock has an oval cartouche (illegible) on the left wrist.

Fine, retaining 70% original brown on the barrel with some scattered spotting and scratches. 60% original vivid case colors with some light spotting on the hammer. Pleasing aged patina on the brass. Stock is fine with numerous scattered dents and scratches, a faded cartouche, and patches of light finish wear on the left side. Mechanically excellent.