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Punktal half-mirrored lens blank (Formmuster Punktal-Halbentspiegel)
OPHTHALMIC LENSES
lens
Zeiss
Europe: Germany
Mid 20th c.
glass; paper
envelope: 41 mm x 45 mm; lens: 60 mm x 60 mm
2015.683
OPHTHALMIC LENSES
lens
Zeiss
Europe: Germany
Mid 20th c.
glass; paper
envelope: 41 mm x 45 mm; lens: 60 mm x 60 mm
One round convex best form lens blank, polished but unedged, with visibly bisected surface. In original white paper envelope with black printed inscription in German.
2015.683
Gift of Mr and Mrs Speers, 2015