3 kreuzer Prussian blue, perforated K 13 1 / 2, with red experiment gumming, cancelled by five ring postmark \"43\" Freiburg on piece, the red experiment gumming became due to an official instruction from 16 May 1860 by one part of issue affixed, photo expertize Franz Stegmueller BPP (2024) \"faultless condition. \", Michel 700.-