Vintage French ARIEL Protective Vest, Paris/Angers, Hard Internal Plates

Vintage French protective vest manufactured by ARIEL, Paris / Angers.
The original sewn-in manufacturer label reads:
“FABRICATION ARIEL – PARIS ANGERS – 2669”
The vest is of very heavy-duty construction and contains multiple rigid/hard plates permanently sewn inside the vest. The plates are not removable without opening the original stitching, which I have deliberately not done in order to preserve the item in its original condition.
ARIEL is documented as a French clothing manufacturer with production facilities in Angers during this period. Based on the construction and labelling, the vest appears to date approximately from the 1950s–1960s.