2, 50 Mark. Rose-carmine on large parcel card section with rks. 50 Pfg dark gray purple / black on bright chrome yellow, dual cancellation "Gdansk *1 o 2.9.20", stamp slightly over the margin fixed, therefore minimal buckling the perforation, tolerably due to the rarity this colour! Expertized Infla Berlin as well signed on the base Kniep BPP, Michel 700.- plus plus