Dear Stamp Community Family
Again I have found some stamps I can not identify:



The first one is probably a charity stamp with a picture of Marie Sklodowska Curie (better known as Marie Curie, the famous physicist/chemist). I am interested to know which organisation issued this stamp. I have seen similar ones with 1 zl but no further information. When were they issued?
The second one is a polnish winter relief charity stamp (Pomoc Zimowa = Winter help). Due to the postmark it was issued sometimes after WWII. But I coudn't find any information about it (Organisation/year of issue).
The third one is a stamp from Allied Military occupation of Germany (AM Post) with a polish overprint. I have seen a lot of polish overprints on German Reich stamps but never before on a AM Post-stamp. Is it just a phantasy or a gimmick? Or has it a deeper meaning?
Is it possibly related to the Polish occupation zone in Germany? The Polish occupation zone was a special area of the British occupation zone in Germany near the Dutch border.
As always: I am looking forward to hear from you. There is such a lot of knowledge out there. I hope as well that there is also knowledge about these three stamps.
Best regards from Switzerland
André