This a Larousse French dictionary from 1939. In the appendix it lists all the then current flags of the world in alphabetical order. You’ll notice that for Germany at that time the flag was the Nazi one replete with Zwastika which proves that this was pre-1945 ( before 1945) ! .
Now, alphabetically, look for the Palestinian Flag. YES , there is one. What does it look like? Surprised? Oh, but you thought (Mandate Jewish) Palestine was an Islamic Arab-Turkish-, Circassian Sovereign State that the bad Jews took over , right?
I posted this graphic on Twitter and it has been retweeted over 200 times so far:
Now, that was not really the official flag of Palestine during the British Mandate. This was:
But it looks like a few Zionist flags were accepted quasi-officially as flags of Palestine as the entire world associated Palestine with Jews.