1919, mixed franking cover bearing three surcharged stamps of Poznan and two of Gniezno Provisional issues together with two German definitives, sent by registered mail from Gniezno (24.10) to Berlin, postmarked on arrival (29.10), vertical fold did not affect the stamps, F/VF and scarce, Fischer #68-70, 71-72, C.v. PLN2,500 for franking by provisional stamps only, Est. $250-$350 (Image)

1958, ''400-Lat Poczty Polskiej'', intact book of 400 pages in hard cover, including all 4 plates of black prints, stamps, miniature sheet and imperforated Specimen sheets with black overprint ''WZOR'' on reverse, all stamps are flawless, the book is practically in perfect quality, 30,240 copies of this book were produced and only a few hundred remained intact, Est. $150-200 (website photo) (Image)