Gliwice 29.4.1921 ZKr (089.8) on registered postcard with 40 Pfg green olive, 1 Mark rose lilac postage stamps issue 1920 to?, from there further routed first to Lona Lany, then to Ostroppa and finally return to sender, transit postmark ZKr KIEFERSTAEDTEL 28.4.1921 (144.1) at back, arrival postmark single circle OSTROPPA 19.4.1921 (241.1) on face, transport traces