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two plano concave spherical lenses and a 'Watford' toric sphero-cylindrical lens envelope
OPHTHALMIC LENSES
lens
British American Optical Company Ltd
Europe: United Kingdom, England
20th c.
glass; paper
1999.222
OPHTHALMIC LENSES
lens
British American Optical Company Ltd
Europe: United Kingdom, England
20th c.
glass; paper
Two lenses. PRO-shape. Plastic (?). Contained in blue paper envelope, printed in white and black.
1999.222
Gift of Mr Philip Freeman, FCOptom, 1999