The Grolier Codex is a manuscript in the ancient Maya writing, which was only discovered in the 1970s.
It consists of only 11 pages, and is incomplete. Each page shows a deity or a hero, looking to the left. It is kept in the National Museum of Anthropology in Mexico City, but is not open to the public.
The handwriting is most likely a fake. Although actually turned out the paper with radiocarbon dates as pre panicked Rindenbastpapier, the painting is " certainly a forgery of the 20th century".