Ebstorfer World Map, T-O-Design, was attributed to Gervase of Tilbury at around 1234 for some time, newer comparisions do date the original image into the year 1300 and no longer to that person. the original is lost due WW II. bombings but reproductions from facsimile copys and a digital reconstruction does exist.
This one is no good unless you view it fully zoomed. A ton of detail here.