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I've got an explaination for you since I've just found out myself.
It seems your name was sent out twice for the Leprechaun mission and mine wasn´t sent out at all.
You don't have to do anything, just keep your coins and enjoy them.
There are some great people in this forum you see, Theotokos is one of them. They sent me some coins to brighten up my day, since I hadn't rcd my mission. It was such a nice thing to do, thanks again if you read this.