1. Foreign-made pieces that were created before 1891 do not have to be labeled with their country of origin while those created after 1891 should be labeled with their country of origin.
Beginning in 1891, the McKinley Tariff Act required foreign-made imports be stamped or labeled in English words with their country of origin. If the piece was not made for export, then it may not be labeled.
1863-1890 
1891-1926 
Belleek China changed their mark to comply with the McKinley Tariff Act of 1891 to include the word” IRELAND”.
