The Trade Mystery Cache

One day I was showing my coin collection to my class and they wanted to know what the different numbers were on the coin flips. I was trying to explain what Krause and Mishler numbers were to the students when a student picked up a coin and said: "This one is missing its numbers." It was an Andrew Jackson gold dollar coin from 2008 which I had recently traded for, I had not gotten around to completing the coin flip yet and would have to do some work on my collection. I know this coin just recently came into the collection because I was able to trade an extra one crown coin from Gibraltar which my friend really wanted because it had E.T. on it. I did not mind making the uneven trade because I had been flipping my extra coin one day and it hit the floor and got a scratch on it.