Willem Guilielmus Janszoon BLAEU (1571-1638), Map of Poland and Silesia

copperplate colored engraving, paper, 41.8 x 52 cm (plate size), 42.7 x 52.6 cm (sheet size in light of binding).
Amsterdam, 2nd half of the 17th century (1st edition of Grooten Atlas [Atlas Maior] - 1663).
In the upper right corner the coat of arms of Poland, in the lower left corner the coat of arms of Silesia;
on the upper left in a decorative cartouche the inscription: "POLONIA / Regnum, et / SILESIA / Ducatus".
Publisher's note p. d.: "Guiljelmus / Blaeu excudit".
On the back, text in German.