It's possible the flickr site above has misidentified theirs... I know that the legs look "identical" from what I can see, the lower cross piece too, the upper cross piece, looks a little different, so I thought one of them was an updated model...
The left leg looks like a direct replacement for the ones I posted...
Did anyone else make irons for the Minnesotas other than Davis?
Google images just showed me curvier upper cross pieces than the one in my pics. Of course, I don't know "newer" from "older" as far as what I saw in the images google showed me.
I'd been hoping for a great big "Winselmann" or "Singer" on the cross pieces so I could identify it quickly. No such luck!