I HAVE A CAESARS PALACE 20 YEARS COIN COLLECTION THAT IS IN A CASE A $5 AND $1 AND $25 COIN IT SAYS IT IS .999 PURE SILVER THAT WAS GIVEN TO MY DAD IN 1986 FOR THERE NEW YEARS EVE CELEBRATION IT IS NUMBER 1150/2000. DOES ANYONE KNOW IF THIS IS WORTH ANYTHING ARE YOU I CAN GET IN TOUCH. MY DAD IS NOW PASS AWAY.