10 Mrd (Billion) Mark on 20 million Mark black blue provissional issue August 1921 - local pressure of the Regional Directorate of Posts Stettin, centered cancellation STETTIN 23.11.23 6-7 * 1 s, according to BPP association expert Dieter Weinbuch is these cancellation genuine and date-appropriate, diagonal slight creases and two shorter perf tips at the bottom, despite a attrative piece of this in cancelled form very rare occurring stamp, photo expertize Weinbuch BPP