
One of the first Parabolic mirrors made by the Cowper-Coles process in 1895
One of the first Parabolic mirrors made by the Cowper-Coles process in 1895, in glazed case, approx 2' 7"
One of the first Parabolic mirrors made by the Cowper-Coles process in 1895, in glazed case, approx 2' 7"