it kinda looks like it might be, however it is not a mifare data dump. Mifare chips, emulated or not, do not have 4 byte data blocks, they have 16 byte sectors with a sector trailer block for access bits and two keys. Whatever you dumped may or may not be useful.
If this came from a smartcard chip, then chances are the data in this easily accessible section of an NFC Type 2 tag emulator are probably not what is actually being used for security or whatever application this chip is used with… unless someone is extremely dumb about how they implemented things. The chip is way more expensive than a “real” NFC Type 2 transponder chip, and way more capable… but anyway, yes it looks like you got some data of some kind from some sort of chip.
I’m confused why you think it’s anything to do with mifare classic atp, it’s an Infineon SLE which is compliant with Mifare Ultralight and sharing its same memory structure of 4byte pages
Fwiw the 66R01L is essentially just Infineon version of the mful ev1/48 byte tags
It’s an arcade game card. I want to make a clone of it so that my friend and I can share the balance on it without needing to give the physical card to each other everytime