1951 - 1956, cancelled special collection watermark varieties, many good values like Michel no. 126 Z, 127 Z with attest, 128 Z, 129 Z, 130 Z, 131 Z, 138 Z, 179 Z and 186 Z with abridged certificate, all named expertized Schlegel BPP, rich collection from abandonment of a collection mounted on pages, in this kind only very difficult to collect, interesting collection with high catalogue value