The oldest, nearly complete Hebrew Bible, believed to date from the 9th or 10th century is going to auction and Sotheby’s expects it to go for upwards of $50-million.

It’s called the Codex Sassoon and is considered the oldest nearly complete Hebrew Bible.

The bible contains roughly 400-large parchment sheets and is written in square letters similar to those of the Torah scrolls in any present day synagogue.

The Codex Sassoon was traced to a synagogue in northeast Syria, in the 13th or 14th century.  It then disappeared for nearly 600 years.

It resurfaced in 1929 and has been kept in private collections since.

Sotheby’s says the Codex Sassoon contains all 24 books of the Hebrew Bible, although some are missing some pages.

If it achieves its estimate at an auction in May, it will become the most expensive book or historical document ever sold.