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Lot n° 192

Brass Butterfield sundial signed "L'ing. Chevallier...

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Brass Butterfield sundial signed "L'ing. Chevallier opticien du roi vis à vis le marché aux fleurs, N°1 Paris". The engraved octagonal plate, triangular folding gnomon with bird-shaped index, compass, the back engraved with the names and latitudes of ten European cities. Mid 18th century, circa 1740. In its original case. Oxidation, gnomon slightly bent.