I don't know if these bodies were imported or cast here in The Netherlands.
This grenade used the Nr19C2 fuze as the scanned picture shows.
Bernt's photo shows an AI marked body with the US M10series fuze.
AI stands for Artillerie Inrichtingen, Hembrug/NL.

Length: 114mm , diameter: 57mm.
Filling: 55gram TNT.

Photo © B. Bosman.