Circa 1600 hand colored engraving on paper map of Silesia (central Europe) published by Abraham Ortelius (1527-1598) Flemish. Cartographer Martin Helwig (1516-1574) Germany. A Martino Helwigio Nissense descriptus, et Nobili doctoque viro Domino Nicolas Rhedingero ded. Unframed, mounted around edges to artist board backing, you can just see the original center fold line, minor age toning and fading.