24+12 and 30+14 Pfg spring fair, always per 3, the 24 Pfg always with margin of sheet respectively -corner, front- and reverse on airmail First Day Cover with first day special cancel" (10 b) LEIPZIG C1 5.3.50" to Barueri / Brazil with arrival postmark, small by a cover to South America to expected restrictions, in this kind interesting First Day Cover with not frequent destination