After the Second World War, Europe fully recovered. In that period, the key ring was mostly used for publicity products. Manufacturers were also related to the people's livelihood supplies, whether it was food, cleaning supplies, cigarettes, toilet paper, packaged food, etc. The rest has fairy tales or stories.
The French fries and the Mei Nii key ring are old features. Now there is no manufacturer to produce such a key ring.
Each of the three styles is only one of these, and basically no sales are found!