Steel etching by Capitain Duperrey, ca 1860. Original outline coloring. A scientific map showing the isodynamic lines. Hardly visible centerfold. Very light browning in lower right area.
General condition is Almost Very Good.
Original outline coloring. This map shows the ocean currents in fine detail and some of the shipping routes of the time. On the lower left side is a global depiction of the South Pole and on the right lower corner the North pole. In the lower center is an inset showing sea temperatures. Map has a bit of light fraying on lower margin edge near centerfold.