Good working condition. It has great "clacking sound" when typing. This is the DIN-240 terminal connector, so please, PLEASE, if you are not sure, do your research.  It does not just work with modern computers, and the connection is different than some of the more common Model F keyboards.  All keys are tested and working.

It is missing one blank key cover located to the right of the field/mark key.  I have not cleaned under the keys, but have cleaned the case and the key caps.  

Here is a good link if you need clarification on the type of connection.

https://sharktastica.co.uk/buyers/converting#DIN240