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Box of 'Perfection' two-part bifocal oval spectacle lenses
Early 20th c.
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Box of oval spectacle lenses
Bausch & Lomb Optical Company
Early 20th c.
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Box of oval spectacle lenses
c.1917
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five trial lenses / stenopaeic slits
20th c.
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lens baton no. 101 "Purple Smokes"
Pilkington; Crookes, William; M. Wiseman & Company Ltd
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lens baton no. 103 "Greenish Smokes"
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lens baton no. 105 "Reddish-Brown Smokes"
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lens baton no. 107 "Neutral Grey Smokes"
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lens baton no. 108 "Neutral Grey Smokes"
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lens baton no. 109 "Slightly-smoked brown-green"
Hallauer
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lens baton no. 111 "Brownish Green"
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lens baton no. 112 "Chlorophylls or Fieuzal etc."
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lens baton no. 113 "Euphos"
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lens baton no. 115 "Amber-Greens"
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lens baton no. 116 "Hygett"
Hygett
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lens baton no. 117 "Grass-Greens"
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lens baton no. 118 "Grass-Greens"
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lens baton no. 120 "Emerald Greens"
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lens baton no. 121 "Lemon-Ambers"
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lens baton no. 124 "Brownish Ambers"
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lens baton no. 125 "Brownish Ambers"
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lens baton no. 127 "Brownish Ambers"
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lens baton no. 129 "Signal Peacock Green (Spectrum Green)"
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lens baton no. 131.
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lens baton no. 132 "Blue"
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lens baton no. 133 "Amethyst"
Crookes
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lens baton no. 135 "Crookes Experimental"
Crookes
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lens baton no. 137 "Crookes"
Crookes
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set of tinted lenses
British American Optical Company Ltd; Essel; Zeiss; Combined Optical Industries Ltd
Mid 20th c.
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Unused 'Punktisken' spectacle lenses
Nitsche & Gunther
Early-Mid 20th c.
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