The lines of islands running north and south on the western side of the outer sides of both portolan charts are very similar.

In general the two portolan charts have some intriguing commonalities, especially considering that they were made over a decade apart in different mapmaking centers. Both include what appears to be the island "Antilia" on them.



1466

 

 

 1489

 
 

link to red sea 1466
Islands detail
1466 Chart		 link to red sea 1489
Islands detail
1489 Chart
magnifying glass Under the Magnifying Glass

The 1466 Roselli
north
south
west
East
center

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