Seen last weekend; several display cabinets with typewriters in a local combination-museum.
In between the cabinets a table with a group of typewriters (Brother) to experience actual typing. And indeed a boy was wondering what to do when you make a mistake - the backspace does not erase :-)
In a larger display/working area next to the typewriter-corner, was a very large Mercedes. Not a Mercedes typewriter and not from Mercedes Büro-Maschinen Werke, but it is a Mercedes to print on paper. Looking very solidly built and very heavy.
It's part of a larger printing-museum display and working area that has a lot of machines - for example this beautifully turned out Heidelberg. (These are grand machines, but probably not something that could be smuggled into the den...)
The combination-museum hosts different collections in an old industrial-building. Another, very large area is devoted to the war and liberation. The aeroplane guarded by a dog, just like the magazine-cover of the era.