To quote myself from a related thread: What are some cards with ~drama~ surrounding their official releases?
Stamped French (and Italian) SM190 Detective Pikachu promos:
On May 8th, 2019, the Detective Pikachu movie was released in cinemas in France. People received a non-stamped Holofoil SM190 Detective Pikachu promo when visiting.
A stamped version was released inside special versions of the French Detective Pikachu movie DVDs and Blu-Rays, only sold at E.Leclerc stores in France. Both the DVDs and Blu-Rays were released with an error however, since instead of the intended French copies, it could contain English, German, French, and Italian copies at random. Since these special editions were only sold at a single type of store, and because of this error, this stamped French SM190 Detective Pikachu promo took me quite a while find, and is probably one of the rarest French Pikachu cards, despite it being a pretty recent release. Eventually I was able to buy my copy from an Italian seller, so I’m pretty sure the Italian versions of these special DVDs and Blu-Rays contained the same four languages of this stamped promo at random. The English and German versions of these DVDs and Blu-Rays contained the intended languages, so those are pretty common to find.
As I mentioned in the quote above, I eventually managed to find my French copy from an Italian seller. Funny and ironically enough, I bought my Italian stamped copy from a French seller. 
Greetz,
Quuador
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