ca. 1454

[Possible/Probable] Stautues von Nieszawa issued by Casimir IV Jagiellon, 11/1454 [Poland] 

Commentary from other sources:
1) “Just like the Synod of Breslau and the Synod of Ofen […] it was ordered that Jews of either sex are to wear clothing that will distinguish them from Christians.”

Scherer, Johann E.: Die Rechtverhältnisse der Juden in den deutsch-österreichischen Ländern (Leipzig; 1901) p. 61