WW2 Propeller Shaped Intense Park 2.2cm or 1.5cm Buttons

These were made in French Canada in the 1940s in the shape of propellers so the population could show their support for the war effort by sewing them onto the clothes they made.
They are plastic and I have them in 1.5cm or 2.2cm wide.
I'm selling them in lots of 6.
I also have them in several other colours and sizes