These Colt rifle-muskets were manufactured throughout the Civil War under contract with the Union and state governments. An estimated 100,000 were manufactured by the end of the war. This model is based on the Enfield Pattern 1853 and has many features incorporated in the Springfield Model 1863. This 1863 dated example has the standard markings and features. It is accompanied by a "Peace Flask" with "BATTY," "1850," and "T.P.C." markings on the top. These flasks were introduced in 1837 for U.S. riflemen and were manufactured by Batty in 1847-1858.