Apologies if someone's already mentioned this, but the excavations at Osteria dell'Osa (ancient Gabii) in Latium, Central Italy, provide some evidence of the written Greek alphabet in use circa 8th c. BC.
"We must respect the law, not let it blind us away from the basic principles of fairness, justice and freedom"
...and would be more convinced with some actual alphabetical greek writings pre-300 BCE, the date they translated the OT to Greek. Shocking that this is not available...