Italian army postal service Upper Silesia 75 Pfg green, 80 Pfg purple brown vertical pair, 2 Mark dark brown postage stamps issue ironworks and peace pigeon 1920 on cover from Opole to Napoli, ZKr Opole 12.2.1922 (237.7), arrival postmark ZKr NAPOLI 17.2.1922 SPEDIZIONE at back, the letter was, like the by far predominant part the correspondence of the Italian troop contingent in Upper Silesia, of the civil post of the plebiscite area transported, date-appropriate traces of age and usage