An ancient Roman gaming die went up for auction at Christie's recently. Per the description:
A ROMAN GLASS GAMING DIE
Circa 2nd Century A.D.
Deep blue-green in color, the large twenty-sided die incised with a distinct symbol on each of its faces
2 1/16 in. (5.2 cm.) wide
Several polyhedra in various materials with similar symbols are known from the Roman period. Modern scholarship has not yet established the game for which these dice were used.
Stupid modern scholars. I mean really. They were playing D & D you f***wits. Gary Gygax had a time machine, yo.
Thanks Kristina, lets get together and play D20 Yahtzee sometime