[Map] 1 Piece. Engraved hand colored double hemisphere World Map. Homann, Johann Baptist after Dopplemayr, Johann Gabriel. "Basis Geographiae Astronomica." Nuremberg, (ca. 1730). 19 1/2 x 23 1/4 inches; 495 x 590 mm, margins. Lightly toned, minor matburn, some darkening and small chipping in blank margins. Body of map generally clean. Later color. Showing California as an island. Expertly top hinge mounted to mat.