WW2 German?

Is this genuine WW2 German made, please?

Ww2 German small metal container semi relic | eBay

I don't know if it is "genuine" but it looks like the head of an M24 'stick grenade' (potato masher). It has the reminder to install the detonator prior to use. :yikes:

Exactly what it is, looks like this repro too...

Looks like he is trying to hide something with his thumb

That is definitely a repro, even where the paint is chipped off and missing (poor attempt to make it look worn), it is new metal showing. Fraud I would call it