Gutenberg Bible
http://en.wikipedia.org/wiki/Gutenberg_Bible
Written in Latin, the Gutenberg Bible is an edition of the Vulgate, printed by Johannes Gutenberg, in Mainz, Germany, in the 1450s. Forty-eight copies, or substantial portions of copies, survive, and they are considered to be one of the most valuable books in the world, even though a complete copy has not been sold since 1978.
That is amazing. Just think: Da Vinci was a baby and Shakespeare wouldn’t be born for another 100 years when that thing was printed and here is looks brand new. That is mind blowing. If you put that in a book store nobody would notice that it looked any different from any other book .