This is a Flintstones metal pin-back button featuring Bamm-Bamm Rubble standing in a field. The writing on the pin is French and translates to "Thank you for your support" and J.B. which we are unsure what is an abbreviation for. The button measures 2 1/4" in diameter. The fastener is intact on the back.  The photo shows large dots in the background; however, these cannot be seen when you look at the pin with your naked eye.