There is not much detail around that area, but based on the angle and placement of the gold, I'm pretty confident it's a knife. Housed in its full original case, 3.75" x 3.25" when closed. Ambrotype is behind glass an in very good condition overall. The covers of the case are separated along the spine. A special Civil War image!
Soldier rare photograph tin type antique photo photography marine navy naval picture history historic 1860s uniform nbsp. The item "1860s Photo Civil War Confederate Navy / Sailor not Soldier Armed with Knife" is in sale since Saturday, June 10, 2017.
This item is in the category "Collectibles\Photographic Images\Vintage & Antique (Pre-1940)\Ambrotypes". The seller is "jack_mord" and is located in Woodinville, Washington. This item can be shipped worldwide.