MusEYEum Online Catalogue

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'Tangal' no-jump solid downcurve bifocal lens
bifocal lens
Carl Zeiss (Jena)
Europe: Germany, Thuringia, Jena
20th c.
glass; paper

'Tangal' no-jump, solid, downcurve bifocal lens. Round. Glass. Ink dot at centre. Contained in white envelope printed in green.


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