Trifari Bakelite?? Bangle

I have a Crown Trifari bangle that I really think is cool. , but I'm having a very hard time finding anything out about it. I looks like a rootbeer type bakelite? I'm not sure of the era...probably about 30's or 40's? I there anyone out there that would know more. Material it's made of? Possible uniqueness or value?? Year's it may have been produced?? I'm hoping someone could help me...I'm stuck! THANKS!! :)