Copper engraving, period coloured and refreshed, mm 385x500. Elegant map executed on Magini's original. Excellent specimen. Janssonius, son-in-law of Jodocus Hondius and brother-in-law of Henricus, collaborated in the publication of atlases, after Jodocus' acquisition of Mercator's plates and from 1638 he was actually the one who led the publishing enterprise, while Henricus Hondius slowly abandoned the activity (from 1646 his name would no longer appear on any title page); he thus became the great opponent of the Blaeu family in the golden century of Dutch cartography. Good specimen with some browning and counter-printing, some restorations to fractures due to colour oxidation, on the verso some paper reinforcements in conjunction with oxidised colour browning.