SFA2 Miki isn’t a part of the Artist Vocal, since she’s from AH-Soft and they don’t even have that. But a similar thing is written on her box: “Artistedition 01”.
Internet Co has VOCALOIDs in the Artist Vocal Series which are: Megpoid (known as GUMI) and Gackpoid (known as Gakupo). It’s written in katakana.
I had check both my Megpoid Native as well as SFA2 Miki’s box to be sure about it.