Yes the tubing (Mannesmann) co. was/is German, but the link for that bicycle built with it is (I think) Ukrainian...it's certainly Cyrillic and I can't read it.
That's more Mannesmann decals on one bike then I've ever seen on the entire Internets, before...so you can bet they are pretty rare.
But the company was a big supplier to other tubing names (like Oria) and rumored to have supplied others, too.
Diamant was one bicycle brand that made frames from Mannesmann branded tubing