Vintage 1940s Ring Hair Grip Tortoiseshell New Old Stock

Straight from the 1940s, here we have new old stock. Still on its original vintage packaging,  we have a faux tortoiseshell plastic ring hair grip hair accessory.
 
I have several of these, and I personally have one that I wear all the time! They do work and look beautiful!
 
Instructions are included on the packaging.
 
Condition: I have sourced several of these, and all are new old stock. Meaning that they are all vintage, but have never been used. All come on the original card, and all are selected at random. Some of the corners of the card may be slighly bent, however all of the ring grips are in pristine condition.
 
Measurements: Measures 8cm or 3.1'' in diameter.