ca. 1941

“Jewish Dress Code” [Germany / Occupied  Poland/Lithuania/Latvia/Estonia/Soviet Union] [Unconfirmed]
Commentary from other sources:
1) “Jewish Poles in German-occupied Soviet-annexed Poland, Jewish Lithuanians, Latvians and Estonians as well as Soviet Jews in German-occupied areas were obliged to wear white armbands or yellow badges.”
“Yellow badge;” wikipedia.org