The Patina Collection
Struck by the International Numismatic Agency. in minuscule amounts, the "Patina Collection" features a range of retrospective fantasy crowns.
Struck on a variety of alloys in stunning proof/proof like manufacture.
Information on many of these can be located at:
Noble Numismatics and Atlas Numismatics:
In addition to many of them being present in the PCGS population report:
