These are some of my observations from whats been posted so far:
Card type: MFC
Magic Capabilities: None or Gen2
UID size: 4B (C4556F4E)
PRNG: weak
Since it has been confirmed that its not a gen1a, it’ll be useful to know what the keys are on sector 0 (where the UID is stored). On a blank card we can normally assume that the keys are default (FFFs) but to confirm this with a proxmark using the command hf mf chk --1k which should give you a table of found keys per sector.
Example Image Showing chk Output
Observed is that all sectors, keys A and B are using Fs which is the default.
Once you have keys you can attempt to write to block 0 which will determine if it is magic or not. The command to do this on a proxmark would be hf mf wrbl --blk 1 -f <key> -d <data>. If it writes successfully then it is a gen2, else its not magic.
If you dont want the more manual approach, gen1a tags are much easier to use and forgiving. Gen1a will allow you to use the hf mf c* subset of commands which take advantage of the backdoor commands unique to gen1a cards.
Gen1a cards are available from a variety of retailers, some more reliable than others. The general things to look out for are that S0 B0 is re-writable, look at reviews for unhappy people mentioning that it doesnt work with MCT and that ‘special’ is needed to write to block 0.