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Tangent Sight
anonymous, 1845 - 1865, demonstration model, NG-MC-1889-30
Tangent Sight
anonymous, c. 1864, tangent sight, NG-MC-1164
anonymous, 1845 - 1865, demonstration model, NG-MC-1889-30
anonymous, c. 1864, tangent sight, NG-MC-1164