50 Pf. on 5 Mark in a-color, overprint in type IVa, being a correctly franked mixed franking with Michel-Mr. 10cIVa and 11cIVa on special delivery. Local letter inside Oppelns, receiver was the at that time Upper Silesia expert Max Haertel, in perfect condition condition, signed vineyard and photo expertize Gruber BPP (09 / 2015), provenance. Collection professor urban