In 1953, if a foreign WOMAN married a Polish MAN in HER country, did she renounce Italian status and become Polish?
As published in Ustawa from 8th January 1951 about Polish Citizenship, Article 10:
1. A foreigner may be granted Polish citizenship at his request.
2. Polish granting of citizenship may depend on submitting evidence of exemption from foreign nationality
source: your poland/userfiles/pdfs/ustawa-1951.pdf
But here is the phrase "may depend" - so it could mean that it wasn't always necessary?