Is it possible to merge
or delete N#254030
.375 fineness is not correct unless you have some source to back it up.
S.Sajauskas, D.Kaubrys - LIetuvos Didziosios Kunigaistystes numizmatika (https://www.lituanistika.lt/content/14594) lists only "around 220"/3.5 lots fineness and two golden trial coins in some museums. 1550 and 1559 years are typos or fakes. I can provide scanned pages from the book, if required. Book is in Lithuanian, but it is catalog and should be readable by non Lithuanian speakers.