coin collection

over the weekend, for the first time i finally got to see my uncle's coin collection. he has been collecting coins for more than 10 years now and he has collected a lot and included in his collection are rare coins he was able to buy online. he deals online to trade some of his coins and he gets most of his online as well. he has a trader who does this for him. someone who is really knowledgeable when it comes to coins. he has spent a lot for his collection but i was told by one of his friends that the rare coins that are part of his collection are world class and if he decides to sell them, he would surely earn a lot.