1907, I.A.S. Switzerland, "Introduction of the International reply form", Swiss reply form in the Roman type l with a value name ". 28 Ct", complete sheets of 50 pieces, each certificate canceled "Bern 11.X.07", the sheet is folded several times, thus 10 bills with horizontal slight crease, some more creased and a few with edge cracks; This is the only surviving complete sheet - Professor Dr. Koch writes in his "Nomenclature of the International reply coupons" A sheet is privately owned and some further copies should be in hand by the International Bureau of the UPU. However, it was declared that there were no sheets existing. A great UPU and Switzerland-rarity!I.A.S.: 1907, Schweiz, "Einführung des Internationalen Antwortscheines”, Schweizer Antwortschein in römischem Muster mit Wertbezeichnung "28 Ct.”, vollständiger - wahrscheinlich Vorlage-Bogen zu 50 Stück, jeder Schein entwertet "Bern 11.X.07”, der Bogen ist mehrfach gefaltet, dad (Image)