20 pfennigs Prussian-blue on paper with steep falling paper pattern of stripes or streaks from in front observes (type of paper p2) in three copies as properly franked mixed franking with 30 pfennigs olive gray on type of paper p1 and 8 pfennigs red orange on registered mail from "Erford 1 -er 23.3.46" to Kiel, a few yellow spots, photo expertize boom lift Schulz BPP "20 pfennigs stamps with this type of paper (p2) on commercial letter are rare. ", Michel 3.640.- plus plus (former starting price 500)