Can be received when destroying various monsters appearing during daily incidents. After collecting 150 signs, you can exchange them for the key from the reward chest.
.......................................... now wich chest is it refer to ? and if it is the game chest for newbies and those who recies it after my and mine coliegues registration ? so what good are they for me and mine coligues ? we don't have that chest so where can we convert those insignias after reaching the required amount suggested by the game ? help us here please ? iam trying to figure it out so far , thanks :)