These European army surplus helmets, M1 shaped(!), have been painted in the notable NATO BLUE colour.
These are Belgian Air force in origin
They have a flag on one side which I believe is Belgian.
The helmets are UNISSUED although have been in storage for some time. They've been stacked so may have a few marks on them.
Fabulous condition, they'd make a great addition to any collection or perfect for repainting.