Plastic Star Men from Mars?

[manchesterunitedman1]

Can anyone help at all, I am looking for these plastic star badges or similar to the images below. They were sold i think mid fifties to seventies and then disappeared as quickly as they arrived, maybe even as earlier as late 1940's. Makers origin is unkown, no stamp or anything to suggest who what where, only on some of the metal pin clasps on the back,"Made in Great Britain", let me know-if you have anything please send an image-good prices paid for any i do not have.
Leslie Millman-manchesterunitedman1