See this Smithsonian article: [
www.smithsonianmag.com] "But as Olshin is first to admit, the authenticity of the ten maps and four texts is hardly settled. The ink remains untested, and a radiocarbon study of the parchment of one key map—the only one subjected to such analysis—dates the sheepskin vellum to the 15th or 16th century, a sign the map is at best a copy. Another quandary is that Polo himself wrote nothing of personal maps or of lands beyond Asia, though he did once boast: “I did not tell half of what I saw.”
Doug Weller
Director The Hall of Ma'at
Doug's Skeptical Archaeology site::
[
www.ramtops.co.uk]