>>742125> What is a telephone card? I saw your post explaining but i didn't really get it.
Basically imagine a credit card without the magnetic strip (black strip) on the back, and without the indented numbers and name. Just a plastic card with a chip.
It was charged with "credits", similarly to a debit card, but those "credits" could only be used for phone calls using a payphone.
You stuck them into a non-motorized card slot, similar to those on parking meters, and kept it in there while dialing and talking, then you removed it.
People generally discarded them after they were empty (very few providers offered the ability to "recharge" your card with credits), but some saved them knowing that eventually they'd become valuable.