anyone know what kind of mixer this is? planetary? thanks.
This is a Bosch Universal (older version).
It's sort of a planetary/vertical mixer. That is, the mixing heads are driven by a drive shaft at the center of the bowl, which move the mixing heads around inside the bowl. The bowl itself is fixed and does not move. I say it's "sort of" planetary because some attachments (like mixing whips) have a orbital/planetary action, while others (dough hook) do not.
Here's a youtube video which shows the action of this mixer.