2 1/2 G. Airmail with plate flaw IV \"line left at the bottom in the \'G\' from \'Guilder\' \", centric cancellation \"Gdansk LANGFUHR 8.7.33\", faultless condition, expertized Tworek BPP and new photo expertize Gruber BPP (2021) : \"the stamp is date-appropriate cancelled, genuine and in perfect quality. \", Michel 250.-