Sylvanus' map of the British Isles is one of the earliest obtainable maps of the British Isles and the first printed in two colors. The map appeared in Sylvanus' Claudii Ptholemaei Alexandrini liber Geographicae . . ., publish in Venice in 1511. The Sylvanus edition of Ptolemy is one of the earliest to include maps with modern geographical updates. The map has been printed on two leaves, which have here been rejoined and backed with Japan paper on the verso, with several minor areas of loss skillfully repaired and the top and bottom margins trimmed into the printed image about 1cm and skillfully reinstated at the lower neatline. A nice example of a map which very rarely appears on the market.