A German School Room Box

My "room box-ing" continues, this time with a vintage German school room box. I actually purchased this on US eBay (for a change!) for a very reasonable price, and it was nice not paying outrageous shipping fees. I have seen similar types of room boxes in the past, but have not yet done thorough research to pinpoint the maker. It is stamped "GERMANY" on the bottom and the orange desks and chairs have a "Made in West Germany" sticker. I was told by the seller that the teacher doll is Erna Meyer. The students are Caco, perhaps? I do not collect vintage dolls, but I know there are a lot of keen eyes out there, so please comment with your opinions.

The room box is in very good condition -- I like the plastic window and the built-in plants on the window sill. The outside is covered in a nice brick pattern. The globe is very large and colorful, and the map in German.

The room box came with four books and pencils, which I love, in addition to a bell and the teachers book. Makes me want to hit the books again! :)

UPDATE, 3/5/10: For diepuppenstubensammlerin, I have added two photos of the inside and back. Thanks for your detective work!