Gwyn & Campbell manufactured around 8,200 of Type I and Type II carbines in 1863 and 1864 in the same factory where they had previously manufactured carbines under the Cosmopolitan Arms Co. name. They are essentially updated version of the Cosmopolitan carbines and were issued to a variety of Midwestern units during the Civil War. This one has the standard markings and features. Matching serial numbers are visible on the bottom of the barrel, frame, and breechblock.

Fine with strong traces of blue with the balance having thinned to a mix of brown and gray patinas and some minor oxidation, strong patterns of mostly silvered out case colors, minor marks and scratches, crisp markings and minor pressure marks on the otherwise very fine wood. Mechanically fine.