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Stereoscope card
ORTHOPTIC INSTRUMENTS
stereoscope card
Europe: United Kingdom
2nd quarter 20th c.
card
overall: 77 mm x 182 mm

Single orthoptic training card printed in black on white card. Includes two statements, each with missing words or parts of words, the whole (if viewed steroscopically) reading "The policeman saw William Brown exceeding 45 miles an hour in his motor car".


2018.734

Gift of Mr John Dixon Salt FCOptom, 2018



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