Iglo specialise in frozen foods, & this transfer is thought to date from 1980. It re-uses figures from the Willeb set Le Secret De La Licorne produced in 1978.
The use of two languages suggests Belgium or Europe in general rather than specifically France, & the letter "B" suggests there was probably more than one transfer in the promotion.
Beyond that, I have nothing more to tell you — except that this image appears by kind permission of French eBay member bd_bouille.
Picture Credit: bd_bouille
© Tom Vinelott 2023