Can anyone tell me if my Enfield is common or rare, and approximate value? It is a 3 band rifled musket marked on the front of the lock with "Tower" over "1862" and the crown on the rear of the lock plate. It is stamped John Marson 4 to 6 inches in front of the toe of the stock, and Marson under the lock and under the blued barrel. "Burr" is also stamped under the barrel. Some indistingishable initials with a "6" are at the rear of the barrel under the stock. Normal proof marks of two sets of "25" with 3 stamped emblems are on the left side of the barrel. The trigger guard, butt plate and stock nose cap are brass. Most of the stock has a black appearing paint on it. The leaf sight is graduated to 800 yards and there is no bayonet lug on the barrel. The rear two barrel bands are missing as is the trigger guard sling swivel. I can email pics but not post as they consume too much space. Thanks.