According to someone who looked into this on an earlier thread this guy was running some kind of scam. It is not illegal to make coins per se but his appeared kinda confusing as to what they really were. I get ads all the time to buy special coins from long established companies.
Did he sell them for US currency?
When you find yourself signing up to buy, you will know that you have become senile, and it's time to put your affairs in the hands of trusted relatives.