Free City Danzig - Essays, Proofs and Unissued Values.
- 5 Mark proof of red color with gray rosette undhermark on vertical watermarked paper (Wz. 2X).
Partial, single color, proofs.
- 20 Mark, proof on the red color with gray rosette underprint on verrical watermarked paper (Wz. 2X).
- 20 Mark, black proof of the red colr on plain ungummed paper.
- 5 Mark, bluish-green on horizontal watermarked paper (Wz. 2Y) without underprint.
- Black proof of 20 Mark background on plain ungummed paper.
- Probably printers waste, with shifted blue color with gray rosette underprint and horizontal watermark (Wz. 2Y) imperforate.
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