I was able to determine mine was made in Belgium from the markings on the musket. Pretty cool. Thank you!This musket is a Piedmontese Model 1844 Musket, or a Model 1844/60 Rifle-Musket. The Kingdom of Piedmont-Sardinia had adopted the percussion ignition system in 1844 with a smoothbore musket based on the percussion altered French Mle 1822. As a result many people see these muskets and assume they are percussion conversions of flintlocks, but they were actually made new as percussion arms. They are easily identifiable by the saddle type rear sight that is screwed onto the barrel's tang.
In 1860 the design was updated by adding a 4 groove rifling. The rifled arms are referred to as the Model 1844/60. These muskets were made in Torino, Italy, as well as in Belgium. Some number of them were imported during the Civil War by Federal agents, which is probably how yours got here.