(West) German telephone boxes

[Ultravanillasmurf]

Maybe in a post-Brexit UK it will be a boon to the tourism industry.

https://scarfolk.blogspot.com/2017/11/help-britain-charity-film-1971.html

[Westfalia Chris]

You don’t happen to work for the German version of the PMG/ Telecom do you Chris? Otherwise your knowledge of telephone booth marks and models would be slightly disturbing...

Actually, I... googled it. 

German Wikipedia has a decent page on the topic, which helped putting a name to the design I distinctly remember from my childhood and misspent youth.

[Michi]

Brawa sells it in H0 scale, would possibly go with 20mm ... (it was introduced in 1978 btw.)
https://www.brawa.de/en/products/n/clocks-telephone-boxes/4563-telephone-box-type-feh-78/
However it should be easy to scratchbuild, because the design is not very challenging...