TPO44: the silver coin which is founded in US is genuine evidence or the fake one?

The reading mainly presents that there are three evidences to prove the coin was not brought by norse to america. however, the listening challenges what are stated in the passage by providing three strong evidences. Firstly, in the reading, it is said that the location of Marine was so far from norse sites in Canada. they had no relation with each other. In contrast, the listening holds an opposed view that native americans travelled over a thousand kilometers to norse’s settlement and brought back the coin. Secondly, the passage asserts that there are no other kind of coins found in the norse’s site. that means that norse has no coins in the native america. however, the professor also maintains an opposite opinion that norse didn't stayed at a place forever. When they returned back to Europe, they took away the valuable silver coins. Finally, the author of reading passage believes that the North understand that the coin is not the most widely accepted form of native American’s currency. On the other hand, the lecturer disagrees it with the point that native americans prefer the valuable or unique items. so the norse can utilize the coin trade with the native americans.