Papyri PCZ I 59021 (c.259/8 BC), shows the occurrences of exchange of coinage in Ancient Egypt. Currency and exchange were important elements of trade in the ancient world, enabling people to buy and sell items like food, pottery and raw materials.
Ang pera at palitan ay mahalagang elemento ng kalakalan sa sinaunang mundo, na nagpapagana ng mga tao na bumili at magbenta ng mga bagay tulad ng pagkain, palayok at hilaw na materyales.