Animal Crossing E-Reader Cards: Series 2 (Nintendo, Gamecube/Gameboy Advance, 2003)

Before amiibo cards, there were E-reader cards! 
For Animal Crossing specifically, these cards made it possible to unlock exclusive furniture, new villagers and full NES games - but you will also need an E-reader for the GBA, a link cable, a Gamecube and the game to actually use them. 

Still, it's a curios and cute item, that is very hard to find! 

The price is for one pack of cards. 
The sticker display box will be put up for sale, once all packs have been sold.