Unusual Teal English 1940s Catalin VERY Deco Buttons - 12 of them - 2.2 & 1.8cm

12 catalin buttons - an unusual rich teal colour, slightly domed, with a very deco design embossed on the top.

In some lights it looks like a green teal, in other lights a blue teal...a very clever button.
The Buttons are either 2.2cm or 1.8cm in diameter and they have a single integral shank at the back
They come on a display card - measuring 16.5 by 10.5cm. 

 Printed on the card is "Washable and Ironproof" - as well as "Made in England" .
They came from an old button warehouse that I cleared.