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Two 'invisible' upcurve solid bifocal lenses
OPHTHALMIC LENSES
bifocal lens
Moussier Boulland & Cie
Europe: France, Nantes
Post 1849
glass; paper
1999.5509
OPHTHALMIC LENSES
bifocal lens
Moussier Boulland & Cie
Europe: France, Nantes
Post 1849
glass; paper
Set of two very early 'invisible' upcurve bifocal lenses. Glass. Oval. Contained in manufacturer's packaging.
1999.5509