Portugal.

Mercator, Hondius, Janssonius. Petrus Kaerius/Pieter van der Keere. / Abraham Goos. "Portugallia et Algarve. " Amsterdam, Joannis Janssonii. 1630
Copper engraved map of Portugal and the Algarve. from the "Atlas Minor" of Gerhard Mercator. Dutch text to verso Dark impression; rust spot within the plate; slight show through of text from verso.

Jodicus Hondius published the first "Atlas Minor" in 1607 in response to the idea that there was a market for smaller, handier and cheaper Atlases to make the maps of Mercator available to a wider public; he probably engraved the maps himself.
The early editions were printed by Hondius and jointly sold by Corn. Claes and Joh. Janssonius, who probably supplied and owned the letterpress.
With Hondius death in 1612 the further editions were published still under his name by his widow and heirs until 1621 when the plates were sold to a London editor.

In 1628 Johannes Janssonius who had married Hondius' daughter in 1612, published a new edition of the "Atlas Minor" with plates partly made by Petrus Kaerius And Abraham Goos.
Koeman: Me197. 140 by 260mm (5½ by 10¼ inches).   ref: 1509  €120