Inscriptions in unknown languages

inscribed fired clay tablet found in Crete, covered on both sides with undeciphered spiral Minoan writing

set of symbols found upon Neolithic era (6th to 5th millennia BC) artifacts from the Vinča culture of Central Europe and Southeastern Europe

archaeological artifact

wooden tablet bearing inscribed markings, discovered in Dispilio, Greece

twenty-three early medieval gold vessels found in what is now Romania

undeciphered archaeological text

11th-century or 12th-century Finnish sword