The 12-Pounder Mountain Howitzers (referred to as Model 1835 or Model 1841 depending on the source) were common at U.S. Army installations in the West. Cyrus Alger & Co. manufactured 326 of them between 1835 and 1870, and Ames Mfg. Co. manufactured another 112. They were utilized by both the Union and Confederacy during the Civil War and were also use in the Indian Wars after the Civil War as well as the Mexican-American War before it. They were lightweight, mobile, and durable and could use a variety of anti-personnel rounds. Their nicknames included the "Bulldog" and "The Gun that Booms Twice" (apparently given by the Native Americans in reference to the spherical case shot which had a secondary explosion after the main charge). They were the smallest of the regulation howitzers. It has a 4.62 inch diameter smooth bore measuring around 31 inches long, "U S" marked on top at the trunnions, "26" on the right trunnion base, and "C A & Co/BOSTON" on the end of the right trunnion, "1850" on the left trunnion end, and "218" at the breech. The reproduction "Pack Model" carriage and the gun could be transported on three mules when disassembled which made it especially useful in rough terrain.

Fine with attractive aged patina and mild wear on the brass and mild wear on the carriage mainly on the tires from display and storage. These historic artillery pieces are especially desirable thanks to their use in multiple conflicts from the 1830s to the 1880s and are far easier to display thanks to their small size.