The picture shows a view of this Old Kellogg's Cereal R & L Ecology MedalPremium / Prize. It is made of yellow plastic and has a loop at the top to hang as a charm. There were six or possibly seven to the set of these. They are believed to be from the 1970s. It was made in Austrailia by the R&L Company. It has an image of Sonny Sun and the two sides are marked as follows:
CLEAN AIR SMELLS GOOD
R&L MELBOURNE AUSTRAILIA 62-4 ¨ KELLOGG COMPANY
The charm or medal measures about 1-3/4'' wide and is in mint condition.