2, 50 Mark German Empire with black printing surcharge "Saargebiet" (Saar region), b color, cancelled "SAARBRUECKEN - * 1 d 9. 1. 21", with plate flaw on the die "tip of the flag broken, white spot in the left wing of the Genius, sheet block 31, partial printing", flawless condition, expertise by Axel Braun VP (2025), "genuine and flawless", not listed in Michel.