A pair of silver spectacles in good condition, hallmarked on the bridge, and arms. Georgian head and makers mark IH but can’t read date letter. The spectacles conform to Richardson’s late eighteenth century patent but are not marked for it. The side lenses are lightly tinted.
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Fletcher Wallis sells objects and books relating to the history of science, medicine and technology from his unit at Admiral Vernon Arcade Portobello Road. He publishes books through Vernier Press, including Antique Medicine Chests, and Corkscrew Patents from 1795. He has been dealing for thirty five years.