Mail that includes letters and postcards and packages sealed against inspection
English: first class, 1st class, first-class mail, 1st-class mail
1st_classEnglish
1st-class mail, 1st class, first-class mail, first class
1st-class mail, 1st class, first-class mail, first class
English: first class, 1st class, first-class mail, 1st-class mail