Five miniature Action Transfers sets that Letraset produced for Rowntrees, who used it for different products in different countries. In the UK we got Blue Riband biscuits; in Europe, Smarties.
One transfer set for each 6-pack of biscuits was not a bad deal…
I've included the used Smarties "le monde sous-marin" background just so you can see how the logo looked at bottom left.
Picture Credit: The SPLAT Scan Archives
© Tom Vinelott 2023