A rare variant of the Speed Epitome map of the World

At first glance the world map in the second edition of Bohun's 'Geographical Dictionary' is the one engraved by Pieter van der Keere for the 1646 pocket version of John Speed's 'Prospect of the World'. However, despite Keere's signature bottom right and identical cartography, it is a completely new plate, only apparent under very close inspection. King, in his book 'Miniature Maps' suggests the possibility that the engraver was Sturt, who engraved the frontispiece. The maps of the continents are by Morden. The text on verso compares different measurements from around the world.