2 Fr. On 12 Pfg postal stamp, variety "inverted overprint" in mixed franking with 10 C. On 2 Pfg and 20 Fr. On 84 Pfg (these interesting defective or badly placed perforation) on postage exceeding tariff rate registered letter from "Sarbrücken 10 d 17.4.48" to Cologne Lindenthal, without arrival stamp, photo expertize Ney BPP (former starting price 200)