A belt-mounted revolver cartridge box with embossed “USN” on the cover flap, intended to hold six boxes of percussion revolver cartridges. The inner flap is marked “NAVY YARD / NY / (anchor) 1861 (anchor)”, and is still clear and legible despite mild surface crazing. The exterior leather is in very good condition, but does have further crazing, as well as some flaking along the edges of the cover, and on the flex points of the single belt loop on the back. The inner flap has some seam separation on one end. This is a hard-to-find Civil War navy item in good overall condition.