This was Horace Smith's (later Smith & Wesson) improvement on the Jennings "Rocket Ball" rifle. He was issued a U.S. patent in 1851 for an improved action, and the repeating rifle was manufactured by Robbins & Lawrence. This particular Smith-Jennings rifle is a Second Model with the pronounced bulge on the underside of the frame, resulting in the nickname "pregnant frame Jennings." Less than 400 second models were manufactured circa 1851-1852. The pill primer and cartridge carrier position spring were improved over the First Model. Features blade front and notch rear sights, seven-groove rifling, tubular magazine mounted underneath the barrel, automatic pill primer operated by the ring trigger which connects to a rack and pinion mechanism, and light floral engraving on the receiver, hammer, German silver oval plaque on the right of the buttstock, and on the buttplate tang. The left side of the receiver is marked "PATENT 1849/C.P. DIXON AGENT/NEW YORK," and the top of the barrel is marked "3C" at the breech. The removable magazine tube plug is marked "2C". A circular collection tag stamped "0084" is hanging from the ring trigger. The Jennings and the Smith-Jennings rifles are important in the evolution of Winchester, having brought together the talents of Benjamin Tyler Henry (who later played a major role in the development of the rifle and ammunition for Volcanic, New Haven and Winchester Arms companies), and Horace Smith and Daniel Wesson (later Smith & Wesson), whose efforts ultimately led to historic developments in the lever action repeating firearms. The Jennings and Smith-Jennings rifles have been properly classified by a detailed study in "Evolution of Winchester" by R.B. McDowell. The majority of these Smith-Jennings repeating rifles were converted to single shot with a ramrod in place of the magazine tube, with this example remaining unconverted and in its original repeating configuration; making it far more rare and desirable than the few surviving examples left today! The rifle is pictured and identified in Lewis and Rutter's "Volcanic Firearms: Predecessor to the Winchester Rifle" on page 17. Provenance: Stephen Rutter Collection; Property of a Gentleman.