Here some pictures of my TTA 51 OTAN.
OTAN "L'Organisation du traité de l'Atlantique nord " is the French abbreviation for NATO
The North Atlantic Treaty Organization .
This is the helmet shell only made in 1953 by the company Franck de Aubevilliers.
So far I haven't found any further information about this company.
This helmet is also a type 2, it has swivel bails.
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