Set of stereoscopic picture cards in original carton, by Ferdinand Enke, Germany, 1928 Set of stereoscopic picture cards in original carton 1928
Synoptophore, by Curry & Paxton Ltd, London and transformer, English, 1940-1960 Synoptophore, by Curry & Paxton Ltd 1940-1960
Book of Jaeger test-types for assessing visual acuity, made by Curry and Paxton, English, 1871-1930 Book of Jaeger test-types for assessing visual acuity 1871-1930
Book of Jeager test-types for assessing visual acuity, possibly made by Curry and Paxton, English, 1871-1930 Book of Jeager test-types for assessing visual acuity 1871-1930
Book of Jaeger test-types for assessing visual acuity, maker or arranger Curry and Paxton Ltd., 195/199 Great Portland Street and 22 Wigmore Street, W1, London, England, 1871-1930. Book of Jaeger test-types for assessing visual acuity 1871-1930