Button ID and possibly value HELP

[Temporary]

I found a button on the side of a river a couple years ago while hiking in northern Wisconsin and I still dont know much about it. It's a P.B.C.O Patented Dec. 9 1924 button but theres no company brand name or anything on the inside. and unlike other buttons of this type ive looked at, its made out what seems to be plastic, so im assuming it was made after the patent. if anybody knows anything about these types of buttons, finding out the value would be great. thanks

 

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[BARKER]

Hi; First is to PLEASE post a picture of the Front and Back of the button. Second is that if it is made of high density plastic then it may actually be made from a type of rubber commonly used back then. GoodYear became the first company to produce your button. It seems to be that type of button ok. Dates to 1920's ok. I await the pitures. PEACE:RONB