Can nyone recommend a good used watch site please?

[Macneil]

Looking in particular for a Junghans or other German watch

[Voldemort]

https://www.chrono24.com/

[Macneil]

Thank you there's tons on there.

[lostkiwi]

If German watches are your thing also look at Nomos, Sinn and Mühle Glasshütte.