¥The
originals were probably written over the period
1400-400 BC.
¥The
earliest fragments discovered to date are among
the Dead Sea Scrolls: parts of Exodus and Samuel
from ~250 BC.
¥The
earliest complete book (Isaiah) comes from the same find, dating to ~125 BC.
¥The
earliest complete copy of the whole OT, surprisingly,
is a Greek translation, from ~AD 350.
¥The
earliest complete Hebrew manuscript only goes
back to about AD 950.