As the name suggests it takes place in 1983. Here’s a Castell 9000 in B you can see in episode 4, used by Professor Tischbier (Alexander Beyer) from the East German Secret Service.
Faber-Castell pencils from 1983 – sounds familiar, you might remember this previous blog post about the Castell 9000 pencils for their 222nd anniversary – that anniversary was in 1983.
Here’s a comparison of the modern Castell 9000, as seen in Deutschland 83 – with the water-based varnish side facing the camera, and the actual Castell 9000 from 1983. The green got even darker, the thick line on the end of the pencils changed from gold to silver/grey and the text printed on the pencils has changed.
The screenshot in this blog post has been taken from Episode Four of Deutschland 83. I believe that the use of the screenshot shown in this blog post falls under “fair dealing” as described by the UK Copyright service.