I had my eye on that for a while...

From what I understand, this was one of a few events items that you could earn by doing the NPCs client order and exchanging some event currency (15).

You also got the NPCs partner card but Global is doing the 20th anniversary thing with PSO1 characters.

When Gene came back last April on JP, she didn't have an exchange, iirc. I was just yielded all four versions of her PC.