Pof.L1-L3, I. provisional air mail stmp., basic imperforated set, value 24Kč/500h IIs/Ip, zavřená spiral from plate 2; fragments postmarks, exp. Vrba, Tribuna Pof.L2A IIs, I. provisional air mail stmp. 24Kč/500h brown, zavřená spiral from plate 2; hinged, exp. Vrba