Checking the Balance on a very old (2002) First Class Phonecard.
I have a very old phone card that was for use with public pay phones.
I would like to check the balance (if there is any balance that can be used) but the only way to check the balance online seems to require an "access number" and a "pin". I have 4 different numbers on the back of this old card and none of them are labeled as an access number or a pin.
Any idea how to check if there is a usable balance on this old card?