FRANCE, fin du XVIIème ou début du XVIIIème siècle Nicolas BION (1652-1733), in Paris Horizontal pocket sundial in silver (950) of Butterfield type. Compass with dry vat embedded, the north marked by a fleur de Lys, covered with a flat bluish glass. Folding and adjustable style in the shape of a triangle and a bird. Rectangular plate with cut angles, engraved with Roman numerals, a leafy base and the name of the manufacturer "N. Bion A Paris" in a phylactery. Back engraved with the names and latitudes of 28 French and European cities. No hallmark. Gross weight: 38.9 g. - 7 x 6.3 cm. Some scratches from use, some chips to the glass.