This legislation imposed heavy tarriffs on imports and also required that imported items be labeled with their country of origin. Until 1921 Japan was allowed to mark their items as Made in Nippon - the Japanese word for Japan. At that time the United States changed the law again to require that the country of origin be marked in English. In summary, here is a rule of thumb guide to dating items by Country of Origin marks. As always, use common sense, and experience.
Many recent imports offer only a country name as the point of origin for that item.
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