@cerick, your third coins is definitely Austria, most likely Salzburg. My best guess is that it was minted in Freisach in the 1216 to 1220 AD timeframe. in that case, the attribution would be Luschin 19. Sorry about the flan breaking, that is a bummer. It seems that silver sometimes gets kinda brittle over the centuries.
The first two coins are Polish I think, but much more recent--probably 16th or maybe even 17th century. The last two digits of the date would be on either side of the royal orb. Perhaps with the coins in hand you can read this part of the inscription?
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz