This item is a set of vintage "ATO" brand French wavy hair pins. 12 hair pins are included in the original packaging. 
Type: Wavy "U" shaped chignon hair pins.
Material: Lightweight, rigid, and non-flammable celluloid (rhodoid).
Color: Tortoise shell pattern.
Origin: Made in France.
Translation
L'EPINGLE FIL: Wire Pin
ATO: Brand Name
LEGERETE - RIGIDITE: Lightness - Rigidity
MATIERE ININFLAMMABLE - RHODOID: Non-flammable material - Rhodoid (Celluloid)