First I had no idea who had used these helmets.
It looks a lot like the ones used by the Belgium Military Police, see Belgium M51 helmet liner Military Police
thanks to my colleague collector "CasquesCollection" I now know more see his blog:
https://casquescollection.skyrock.com/3336915888-12-1-Sous-casque-de-la-Force-Aerienne-marquage-P.html
This liner was used by "Regimental Police" personnel at Belgian Air Force bases.
Now I understand why the I can see grey at places where the white paint came of.








69 = 1969
Company still exists: https://www.schuberth.com/en/company/about-us.html
and https://en.wikipedia.org/wiki/Schuberth
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Helmliefhebber, Posté le dimanche 08 novembre 2020 09:18
CasquesCollection a écrit : " "
Dag Thierry, dank U wel voor deze informatie, ik ben er erg blij mee, inderdaad waar de witte verf weg is zie je het oorspronkelijke grijs van de helm, ik vond dat al vreemd.
met vriendelijke groeten
Bertie