Antique Civil-war deals era brass eyeglasses/spectacles with tin case

Amazing old Civil War-era wire-rim brass-colored eyeglasses, or spectacles, with case. We would love to know the story behind deals these beauties! There are loops at ends of the temple pieces which have been bent slightly in places (probably to accommodate the wearer) and there is one small chip on lower left lens. The case, 6.25” long and about 1 3/8” wide, appears to be tin, and is scuffed and a bit rusted as you would expect for a piece of this age. It is lined with dark blue felt that appears original. Hinges are intact and work well. The catch works and the case closes and opens easily. Lovely set.