Sorry, I dont know too much as I'm knew to medieval coinage also. Ive also only looked at half-groschens. So far all 1/2groschens of Sigimund II Ive seen have the Vytis(knight) on one side and eagle on the other. I have seen Sigimund I's with a crown and Eagle, I assume these were minted in Poland. But like I said I dont know a lot so take it for what you will. Thank you for your post.
























