40 Pfg. postal stamp, 8 pieces front- and reverse on postage exceeding tariff rate international-R-printed form letter (sender adress from Czentochau) from PRUSSISCH-HERBY (Kr. LUBLINITZ) 15. 11. 21 with on the back foreign exchange closure note and two-line cancel "post monitoring place Dresden" to Vienna with arrival postmark, cover three sided opened and verso Tesa piece, in spite of postage exceeding tariff rate obviously a commercially used letter