5 R. on 10 Kopeks red-purple, overprint in Type III (swastika 4 mm), on an overpaid and not postally forwarded registered letter, the envelope is folded in the middle outside the postage area and slightly stained, cancelled with a Cyrillic stamp "18 8 41" (courtesy), the stamp is minimally stained and has the typical perforation, extremely rare and decorative example of this already very rare stamp, signed E Keiler and photo certificate Walter Zirath BPP (2025) " The stamp is slightly stained. Otherwise, no defects are visible, as the perforation is typical. The cancellation was made as a courtesy. This is a very rare stamp."