20 cent 2000 (unknown error)

This is the balance of  70 cents from my cigarette purchase at 7 Eleven section 16 Shah Alam. I saw the coin when the cashier opened the coins drawer and at that time I hope she will give this particular coin and ....yes..she purposely gave it to me...Did she know I want this coin..?Quite interesting. I'm not sure what is this..?