1950 - 2001, more or less exclusive mint never hinged collection, as well a multiplicity high quality issues like Michel no. 67 / 76 with lower margins, souvenir sheet 1 / 4, 741 / 43 A+B, 966 / 76 and 977 / 81 \"Maos Theses I+II\", 985 / 89, 995 / 1008 \"Maos odes\", 1070 / 73, 1221 / 24 \"mechanical engineering\", souvenir sheet 12 \"horses\", souvenir sheet 13 and souvenir sheet 20, extensive collection with numerous sought-after issues of the asked area, mounted on pages