The first rifle made in Sam Colt’s Paterson NJ factory was the 1837 “ring lever” rifle. These were rather fragile and underpowered and while they were used successfully in the First Seminole War, they needed improvement. Colt set about doing this with his 1839 pattern, which was more robust and more powerful. It had six chambers of .525”, with much greater powder capacity than the first Colt revolving rifles. A total of about 950 were made before the Paterson company failed in 1842, and nearly 700 of those were military sales. The US War Department bought 360 (including this example), the Republic of Texas bought 300, and the State of Rhode Island bought 46 - the rest were sold to private companies or individuals. Despite its improvements, though, the 1839 revolving rifle was still not a mature design and was not successful enough to keep Colt in business.