
It is quite dirty. And there are some surface rust on unprotected/unoiled steel parts. Those that were oiled well or painted looks fine (but dirty).

Serial number badge. What is "1,5 facher sperrschritt"?

This is the connector it has. Is this the standard connector for teleprinters? Is it possible to get the mating female connector?

I am going start cleaning up the keyboard and saw these rubber bumpers that is completely dried out. Anyone replaced them? Is there a suitable replacement?

Below the keyboard there is some greyish material. What is the purpose? Absorb oil spill? What is the material? It doesn't really look like asbestos, but one never can be sure. What do you think?
I was thinking about starting with the keyboard. What is the best cleaning method? I was thinking about using the compressor to gently blow away some dirt. Should I then use degreaser fluid? Or is soap better? Please advice!
Any input highly appreciated!
/Mattis