This .54 caliber, smoothbore, flintlock pistol is one of approximately 18,000 Model 1836 pistols manufactured by Robert Johnson of Middletown, Connecticut between 1836 and 1844. The Model 1836 was widely considered to be the best designed and manufactured flintlock pistol. The pistol has an 8 1/2 inch round barrel with a brass front sight blade, swivel ramrod with button head and iron mountings. The barrel, ramrod, butt cap, barrel band and trigger guard were once "bright". The lock plate, hammer, and tang were once casehardened. The lock is marked "U.S. / R.JOHNSON / MIDDNCONN / 1843" below the brass pan. Inspection and proof marks "JH / P" are stamped on the left rear of the barrel. The left stock flat is marked with two oval cartouches. The Model 1836 Flintlock Pistol was the standard issue handgun of the Mexican War.

Refinished and reconverted to flintlock. The barrel, barrel band, side plate and trigger guard exhibit a smooth artifical dark brown patina. The lock plate and hammer show evidence of being cleaned at one time and are now exhibiting a smooth dark gray patina. The rest of the metal surfaces exhibit traces of the bright finish mixed with a smooth dark brown patina. The wood is fine with some minor scratches and chips and some minor to moderate pressure dents. The markings, including the cartouches, are legible.