Is SSPX considered a valid Mass?

I was looking for a Latin mass in my home city, Louisville, KY, and came accross one pffered in a Society of Saint Pius X Church. With all the hubbub going on about the lifting of some of the excommunications by the Holy Father, I Was wondering if this would be considered a valid mass. Any thoughts?

~DJ

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[LIST]
*]What is an SSPX Mass?
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*]Am I sinning by attending an SSPX chapel?
*]Does the SSPX have valid sacraments?
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