Austria archiducatus / per Gerardum Mercatorem

An early map of Austria by Gerard Mercator.
Gerard Mercator (1512-1594) was one of the most famous geographers of his time. He was renowned as a scholar in his day, and his name is known to this day as the inventor of the map projections named after him. His maps are known for their precise geographic information and for their attention to detail. All of his maps are finely engraving, mostly by Mercator or by one of his family members. He worked initially from Leuven, Flanders, but then from Duisberg in Germany. Around 1563, Mercator became cosmographer to Duke William V of Julich, Kleve.. in Germany.
As the cosmographer, he began the writing of a Cosmography intended to cover, in five volumes, the entire known world. As Mercator was involved in all aspects of the time-consuming Cosmography, from writing the text, drawing the maps, and engraving the copperplates, the atlas was not finished in his lifetime and only sections were finished and published before his death. His son, Rumold, along with other family members finished the various parts and published the final product, including previously published parts, as the Atlas Sive Cosmographicae... in 1595.
This particular map appeared in the Latin edition of the Mercator Hondius Atlas of 1613. Latin text on the verso describes this area. This map last appeared in 1623 in a Latin edition of the atlas, after which it was replaced with other maps of the region by the Hondius and Janssonius publishing firm (van der Krogt, p. 613).

Reference: Van der Krogt, Peter. Koeman's Atlantes Neerlandici, vol. 1. 't Goy-Houten: HES Publishers,1997.