1996 C220 - no coolant overflow container???
The space where it should be according to the internet is - empty?
However, there are no hoses running out of the radiator indicating something is amiss.
Here are two images. One of the top of the radiator, and the other one is where the coolant overflow container "should" be.
If it helps, I'm in the UK.
Radiator top: https://i.imgur.com/bn74yrO.jpg
Where coolant overflow should be: https://i.imgur.com/0y4aq8R.jpg
In your case you just fill up the radiator.


