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Eyeglass - Set of magnifying lens on metal frame designed to fit over a pair of spectacles. The lens are interchangeable, with size 2 and two sets of size 3 (wrapped in paper packaging 'Lentilles tres port grossissement'). Used by Jean de Sperati when producing his reproductions. A picture of him wearing these may be found in Carl Walske's book on Sperati. The set are stored in a wooden box, with metal hinges. On the top: 'Loupe Binoculaire Réglable' and in pencil 'loupe sans écran'; on sid