End of the second century BC (Crowther 2004)
320-310 BC (see the commentary)
ca. 500 BC (dated on letters form)
300 BC ca.
Both palaeography and orthography seem to be consistent with a 1st century BC dating, probably around 50 BC
after 359 BC
late 6th/early 5th c. BC
375-350 BC, as stated by Dubois
late 3rd century – early 2nd century BC
late VI century BC