A LATE 18TH-CENTURY FRENCH SILVER OVAL 'BUTTERFIELD'-TYPE DIAL, signed Macquart AParis, the horizontal plate engraved for latitudes 42, 45, 49, with compass and spring-loaded livid gnomon, the underside engraved with the names and latitude of twenty-four continental cities and towns, contained in green lined plush fish-skin covered case--2 7/8in. (7.3cm.) wide

細節

A LATE 18TH-CENTURY FRENCH SILVER OVAL 'BUTTERFIELD'-TYPE DIAL, signed Macquart AParis, the horizontal plate engraved for latitudes 42, 45, 49, with compass and spring-loaded livid gnomon, the underside engraved with the names and latitude of twenty-four continental cities and towns, contained in green lined plush fish-skin covered case--2 7/8in. (7.3cm.) wide