ID of an german 37x94 grenade

[303hans]

I found on a brocante in France two 37mm German grenades. They are both te same and have an zinc heads. Made by fso and is stamped: Ersst 32 .
One came on a steel 37 x 94mm case. It was rusty and after cleaning I could reed 53 and 1941 on the base.
The grenades are marked eap 69 and eap 70. And a WaA stamp. They were both empty and the zinc heads were als empty.
What kind of grenades are these. Exercise maybe??
Thanks

 

[MINENAZ16]

German 3.7cm Spgr. L/2.5 Blind (Fes) : inert loaded practice round (inert fuze Ersatzstück 32)

 

[303hans]

Thank you very much Minenaz16.