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Chance's Crookes Lens Flat A Shade
Thomas Styring & Son Ltd
Europe: United Kingdom, England, South Yorkshire, Sheffield
Early-Mid 20th c.
glass; paper
lens: 40 mm; envelope: 53 x 53 mm

Crookes tint lens in supplier's paper envelope printed in black. Crookes glass: +1.00 A shade. Unfinished rough round shape.


Gift of Dr S. Kassam, FCOptom, 2006

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