I know a house that has a small subpanel that looks like a miniature version of the last picture. From what I remember it was inside a wooden Cabinet up on the second floor. I wish I had thought to take a picture.
I've seen this style Panelboard in an old building being used as a Cabinetmaking shop. I remember seeing it covered with sawdust too.
p.s.- My original post got sent out under my wife's e-mail, hence the "Debbie" at the end...
Sorry about that! .. It's got your Name up there now.