bottom side of barrel 44s. On the left plate are the patents May3 1864 may7 June11 Nov 12 Dec 24 Dec31 1872 Sept 9 1873. It has a 32 inch octagonal barrel with rifling. it is a center fire. IT has a cresent but plate with a metal plate. It appears to be model 3 or 4 but don't know how to tell for sure on that or the caliber and when it would have been made

