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Watford 'Astor C2' Lens
British American Optical Co Ltd
Mid-Late 20th c.
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Watford 'Grisolux 40' Lens
British American Optical Co Ltd
Mid-Late 20th c.
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Watford 'Rosalux A' Lens
British American Optical Co Ltd
Mid-Late 20th c.
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Watford 'Rosalux B' Lens
British American Optical Co Ltd
Mid-Late 20th c.
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Watford 'Rosalux B' Lens
British American Optical Co Ltd
Mid-Late 20th c.
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Watford 'Rosalux D' Lens
British American Optical Co Ltd
Mid-Late 20th c.
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Watford 'Rosalux' Lens
British American Optical Co Ltd
Mid-Late 20th c.
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Watford Anti-Reflective Coating Lens
British American Optical Co Ltd
Mid-Late 20th c.
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Window display of Kryptok Invisible Fused Bifocal manufacturing process
1930s
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Wratten Colour Filter (Gelatine) Series 48 Reference 5
Kodak Limited
Mid 20th c.
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Wratten Colour Filter (Gelatine) Series 50 Reference 5
Kodak Limited
Mid 20th c.
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Xtractive
Norville Optical Group
1980s?
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Yamato Polarised G lens
Yamato
Late 20th c.
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Youngerlite Seamless bifocal lens
20th c.
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Zeiss Duopal Production Process
Zeiss
Mid-Late 20th c.
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Zeiss Gold AR
Zeiss
1970s?
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Zeiss Meniscus Lens
Carl Zeiss (Jena)
20th c.
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