German Übung bomb

[MINENAZ16]

It's the first time I see such a german bomb case, I assume SC250, with the marking Üb (photo from google image), any idea ? :

 

[MRoy]

Never seen before, thanks for this interesting photo

 

[PETERTHEEATER]

Perhaps it indicates a Practice Bomb

Übersetzung für 'practice bomb' von Englisch nach Deutsch ; practice bomb · Übungsbombe {f}