Villeroy & Boch vessel ID needed

[Olive]

       

I inherited this lidded vessel from someone who had inherited it from a collector great-uncle.   It is in poor condition so probably not saleable,  ut I would love to know what it is.   

Height is about 27 cm, the hole in the lid is about 4cm.   The most likely use for it I can think of is as a receptacle for food scraps,  but that doesn't entirely work.   Nor does it seem like a chamberpot.