1918 handstamped Poczta Polska and Polish Eagle on GGW overprinted Germania stamps, 3pf, 5pf, 7 1/2pf, 10pf and 15pf-50pf, nine different upper left sheet corner margin blocks of five, canceled on pieces by Kalisz 15.12.18 cds, fine-v.f., signed Jungjohann (Cat No. Fi.15/15) (Image)

Est.$500

1919 (20 Mar) 7 1/2pf stationery card with violet "Poczta Polska" handstamp, additionally franked with 3f and 5f and used from Kalisz to Warszawa, fine and rare usage from Kalisz local post, signed Fialkowski, with 2017 Korszen certificate (Image)

Est.$350