Which of the following items was not a type of commodity money used on the Silk Road?

Only Gold and Silver were used as money on the silk road.

Explanation:

On silk road, during the medieval period, Silver from the Chinese empires and Gold minted at the Byzantine empire were exclusively used for trade between all participating nations as we know from the coinage of the period.

Any other form of commodity money was not in use as it would have hurt the system of business on the road which was highly organised and regulated by the empires at the both ends of it which were the Byzantines and the Chinese.

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.