US Civil War Mann's Patent, Cavalry Cartridge Box

Original era manufacture. A rather well used example but still quite sound for display. Black leather pouch with an embossed US on it's flap surrounded by and oval bearing the name of Colonel Mann designer of a unique system. There is a smaller separate pouch on one side for carrying percussion caps. The metal 'tins' are missing, instead a wooden block drilled for 30 rounds is inside.The closure strap is missing, belt loops are intact.