[Royal Binding] Pingr?, Alexandre Guy. Etat du Ciel, Pour L?An de Grace.Bissextile. Calcul? sur les principes de M. Newton, rapport? ? l?usage de la Marine. Paris: Durand et Pissot, 1756. Volume three of a nautical almanac titled Etat de Ciel, first edition, contemporary full grain maroon morocco, ruled thrice in gilt with the royal arms of Louis Philippe I Duke of Orleans and First Prince of the Blood (1725-1785) centered on both boards in gilt, decoratively tooled spine in gilt with floral shapes in 6 compartments and raised bands, titled in blind, a.e.g., marbled endpapers. 8vo. Completely illustrated with Moon tables based on the work of le Monnier and a woodblock vignette of Saturn. Folding map in rear of the Hyades star cluster from the observations made by M. de Seligny, an officer and astronomer in the East India Company; titled Carte des Hyades Etoiles dela Constellation du Taureau. Corners and joints rubbed, closed tear to top margins affecting p. 1-46, light soiling to title. A very scarce and important work on astronomy.