This is a Dutch Army Military Cap / Kepie model 1916 M16 “grenadier” manschappen (laag model).
The insigna indicates it was for a grenadier, the metalic cockarde that it was for “manschappen”.
In very good condition, only the inside top cloth has been damaged by wearing, which is pretty common. It would be hard to upgrade.
Simply a very cool early cap!
The lower size kepie’s are hard to find!