Coca Cola Cardboard/Plastic Button Sign, 27 1/2 in diameter, has 2 punched out holes (3/8in size holes), one hole at the top other on the bottom, top hole used to hang the sign in the window, bottom hole used to hang the soda price.  The holes were put there by the manufacturer.

Inner cardboard button has depth of about 5/8 inch; cardboard edge is about 1/8 in depth

The material feels like a high density compressed fiber, like inflexible cardboard,  perhaps its plastic, not sure.

Great visual advertising tool, sure it will help increase the soda sales or make a nice collectible.

It is approximately 20-30 years old.

2 images showing each side

Purchase is "As Is with No Returns"