In the 12th century Neunkirchen (close to Wiener Neustadt) in modern day Lower Austria made their own coins. They are very sought after and rare but they do exist and it would be a new issuer because the coins were struck under the abbey or Neunkirchen.
Numismatik-Cafe • Thema anzeigen - Formbacher Pfennige aus der Prägestätte Neunkirchen, 12.Jhdt
This is a forum post on the matter from an Austrian coin Forum.
MK-ATW-KHM | Tablett (ikmk.at)
This is the online catalog (not complete at all) of the Austrian National Art Museum.
Would be great if you could add them. The coins do sell too so it's not like getting pictures is impossible.
To catalog the coins we can just use the types that are in the Art Museum catalog and find pictures of auction houses that allow us to do that.