BEIN 21 1670A: Manuscript number on verso: 173. Watermark., Depths shown by isolines and soundings., Coordinates not present on map and are approximated., and From Blaeu's De groote Zee-spiegel (Amsterdam, 1655).
BEIN 21 1670B: Manuscript number on verso: 174. Watermark., Depths shown by isolines and soundings., Coordinates not present on map and are approximated., and From Blaeu's De groote Zee-spiegel (Amsterdam, 1655).