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Lonsdale Progressive Stereograms
ORTHOPTIC INSTRUMENTS
stereoscope card
Elliott Optical Co Ltd
Europe: United Kingdom, England, Lancashire, Manchester
cardboard
1999.3166
ORTHOPTIC INSTRUMENTS
stereoscope card
Elliott Optical Co Ltd
Europe: United Kingdom, England, Lancashire, Manchester
cardboard
Set of 11 stereograms consisting of white circles on black backgrounds. Also 3 binocular visual test cards, one card depicting the letters 'F' and 'L', and an instruction leaflet. Contained in cardboard box with paper label printed in green.
1999.3166