1870/74 exhibition collection of postcard forms before UPU beginning with the first issue clean with detailed, knowledge-rich description on sheets, included are a total of 23 cards, incl. 3 used pieces, the first issue divided into 5 different types including the card Ia with an edition of only 850 pieces, incl. one card used as postage-free newspaper item, a fantastic collection, please inspect!* (Image)