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French Optians Eye Testers

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French optians' eye tester to determine a patients prescription.

Five pairs of specatcles made with graduated focal lengths and hinged into one case.

Made of black horn with an engraved plate identifying the calibrations 'Concave 0.5-5.0'.

Made circa 1880.

5 inches long


Item Code: 4923

£ 395

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