3 R on 20 Kopeks, black-yellow-green, overprint in Type III (swastika 4 mm), horizontal strip of three! postmarked with a Cyrillic stamp, the perforations are slightly shortened in the upper row for two stamps, otherwise the condition is flawless, units of this stamp are extremely rare, signed Pickenpack et alia, photo certificates Werner Pickenpack BPP (1971): " This is the only strip of three of number 2 that I know of so far. " and Walter Zirath BPP (2025) "The strip of three is very rare.", Michel 5. 400.-