Overprint Edition of the Free City of Danzig till 1923.
First 'Berliner' edition.
Rarest colour variety, blackly blue, number of the printing house H 3374 - 20 of the margin.
Packet card paid 'Porto' DM 2,00 mailed from the post office of Sopot to Freuen, the stamps postmarked with the bridge date cancel of Zoppot 22.7.1920 and additional unknown cork stamp. It is an cachet use of stamp cork in Free City Danzig that I know.
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