Taxpayer’s petition for redetermination of deficiencies in her 1950 income taxes was filed with the Tax Court on September 15, 1955, the 92nd day after the notice of deficiency was mailed her. It was contained in an envelope bearing the United States postmark for September 14, 1955. Hence the court correctly held it had no jurisdiction of the petition, since it was not filed within the 90 days required by I.R.C. § 6213(a), 26 U.S.C., and since I.R.C. § 7502(a), providing for treating timely mailing as timely filing, was inapplicable in view of its express requirement that the postmark date must fall within the prescribed period.

Affirmed.