[Covenantor]

The Romans were great road builders as well bureaucrats. The far flung empire required the roads for commerce and communications.

Quite clearly it is a postage meter of sorts.

The twelve faces with holes of varying diameters were meant to simply gauge the weight of various sized scrolls. The longer the scroll the bigger the diameter and greater weight. The postage service was priced accordingly.

With twelve faces it doubled as a desk calendar and paper weight. Maybe.

An olive size gauge.

[reed13k]

Hole on top is larger - I’d guess a lamp like device (candle in the top or the top over a wooden pedastal)

Or maybe a vase for dried flowers

course relative size is hard to tell from the picture so that would make a difference too

[TexasRepublic]

Wrong! It is the core from a Vogon warp drive plasma fusion chamber. 3rd generation design, I believe.