Set BB - Subbuteo Player Badge.
"Brightly coloured, enabling you to be recognised as a Subbuteo Table Soccer owner."

Subbuteo produced a number of different types of badge over the years. I believe the one on the far left to be Set BB. The green and lime versions are fairly common and were included in some of the sets from the 1970's and 1980's. The gold coloured badge is rarer and I have only ever seen one. I think it dates from the 1970's.