Rumold Mercator’s double hemisphere map is based on the 18-sheet world map of 1569 created by his father, Gerardus — a masterpiece of which only three complete copies are believed to have survived. Although condensed, Rumold’s map is still remarkable for the elegance of its design and engraving. An elaborate strapwork border frames the two hemispheres as well as an illustration of an armillary sphere and 32-point compass rose. This map was first created in 1587, before appearing in Mercator’s Atlas from 1595 onwards.