From Official Wiki of the Renaissance Kingdoms

Oboli (Oboli.png) are pounds but pounds from some other place. They are the only to buy goods on the merchants' camp.

They can be neither robbed on road, nor be sold or exchanged on the market.

You can win them during the events of:

On the back of the old machine, you read these strange verses:

To you who plays your soul with one hand,
Know that no trick is wasted.
Be on the lookout, with your ear to the ground,
The answer will come one day.