1, 50 Rbl. on 15 Kopecks postal stamp, hand stamp overprint in type III (swastika 6 mm), horizontal pair whose the left stamp a inverted overprint carries, mint never hinged, very fine, unsigned, photo expertize Walter Zirath BPP (2025) "these stamp is one of the largest rarities of the German occupation issues in the II. world war. ", Michel 14.000.- extremely rare and rarely offered stamp! only three pairs of this variety are known to exist!