12+18 Gr to 1+1 Zl and Michel number 75 on properly franked letter (registered mail, airmail, pneumatic post, special delivery), from Cracow 17.03.1943 to BERLIN

1 zloty \"400. Day of death from Michael Kopernikus\", trial printing, complete printing sheet with four miniature sheet (form numbers II / 1, II / 2, II / 3 and II / 4) on ungummed, wood containing yellowish proof paper without data impression in the size 430 x 340 mm. Apart from one slight trace of crease top right - the according to certificate insignificant is, in perfect condition, unsigned. Photo expertize Detlef Pfeiffer BPP (2014) : \"this is the so far only known, not cut in pieces printing sheet with the printing number II, and is therefore an unique piece. \" - from museum character, a must-do for the large general collection Germany or a special collection Generalgouvernement!

Buildings 1943, 2 to 6 zloty as complete mint never hinged sheet set, unperforated, Michel 750,-

4 Zl. Buildings, proof on yellowish paper, unperforated, unused without gum, as issued, rare, photo expertize Pfeiffer BPP, Michel 1000.-