100 Zlotys Polish Millennium Trial Strike Ni faces right with eagle, large eagle 2nd type

Poland's Millennium coinage program commemorated the 900th anniversary of Polish statehood — specifically the Christianization of Poland in 966 AD under Mieszko I. The 1960 trial strikes were produced in multiple metal variants and with competing eagle designs as authorities worked through acceptable types before settling on final circulation specifications. This particular piece, with the second-type eagle, documents that selection process directly.

Trial strikes from this program rarely escaped official channels, which accounts for their extreme scarcity in private hands today.