Phone and smart cards — The World of Playing Cards
AT&T Prepaid Phone Card | $10 to $300 | Kroger Gift Cards
I Remember When You Were Cool retro Nokia Phone Birthday Card – The Letter Arty
BT phonecard, 20 units | Museum of Design in Plastics
I've kept these phone cards since the 90s. They are not worth anything, as I don't think there is much of a collectors market, but I enjoy looking at them as souvenirs
Vintage Telephone Calling Cards / Phone Cards - Used
Phone and smart cards — The World of Playing Cards