The Dispilio Tablet

In 1992 there was a remarkable archaeological finding in Greece: writing on a wooden tablet that turned out to be 7000 years old. From Wikipedia:

The Dispilio tablet is a wooden tablet bearing inscribed markings, unearthed during George Hourmouziadis's excavations of Dispilio in Greece, and carbon 14-dated to 5202  (± 123) BC. It was discovered in 1993 in a Neolithic  lakeshore settlement that occupied an artificial island near the modern village of Dispilio on Lake Kastoria in Kastoria, Western Macedonia, Greece.