1979, Vienna Definitives, artist's drawing for proposed 3s design in block of 10, acrylic on artboard, allover size 256x228mm, this design was used for the Vienna 4s definitive, UNIQUE. (Scott #3) (M) (Tax Method: Regular Taxation)

1979, Definitives, approved artist's drawing for Vienna 7s design by Rocco Callari (USA). Acrylic on card, mounted on artboard, 447x370mm, also printer's model for this design. UNIQUE. (Scott Vienna #5) (MS) (Tax Method: Regular Taxation)

1980, UN 35th Anniversary, enlarged printer´s model of inscriptions and borders for Vienna souvenir sheet, photographic collage mounted on artboard, 210x164mm, UNIQUE. (Scott #12-13). (T) (Tax Method: Regular Taxation)

1981, IMPERFORATED single stamp for the issue »Works of art for the United Nations« showing 6s »Sebastokrator Kalojan and his wife Dessislawa«, mint, NH. (Vienna Scott #19) (Tax Method: Margin System)

1981, Energy Conference, Vienna 7,50s, approved artist's drawing by Robert Perrot (France), collage on artboard, 315x257mm, matted. Also artist's model by same artist, collage on artboard, 322x227mm, tracing paper overlay with "31c" and English inscriptions. Furthermore artist's model of background shading. All UNIQUE. (Scott #21) (M) (Tax Method: Regular Taxation)

1984, World Heritage, approved artist’s drawing for Vienna 3,50s design by R. Callari (USA) & T. Lee (China). Photograph and collage, mounted on artboard, 307x280mm. With acetate overlay showing denominations. UNIQUE. (Scott #44). (M) (Tax Method: Regular Taxation)

1984, World Heritage, trial color die proofs for Vienna 3,50s, 15s mounted on Harrison & Sons presentation folder, 202x100mm. (Scott #42-43). (M) (Tax Method: Regular Taxation)

1984, World Heritage, die proofs in issued colors for Vienna 3,50s, 15s mounted on Harrison & Sons presentation folder, 202x100mm. (Scott #42-43). (M) (Tax Method: Regular Taxation)

1984, World Heritage, approved artist’s drawing for Vienna 15s design by R. Callari (USA) & T. Lee (China). Photograph and collage, mounted on artboard, 307x280mm. With acetate overlay showing denominations. UNIQUE. (Scott #45). (M) (Tax Method: Regular Taxation)

1986, WFUNA Souvenir Sheet, approved die proof in issued colors mounted on Enschede presentation folder, 215x140mm. (Scott #66). (T) (Tax Method: Regular Taxation)

1986, approved die proof in a corner block of 4 for the 3.50s value of the issue "Stamp Collecting" showing "UN Stamps", mint, NH. (Scott #62) (Tax Method: Margin System)

1986, Essay in nicht-verausgabter Wertstufe "7 S” für Marke "5 S Ölzweig, Regenbogen, Weltkugel” der Ausgabe "Intl. Friedensjahr”, ungezähnter 4er-Block, Farben wie verausgabt, postfrisch. (Tax Method: Margin System)

1989, Human Rights, approved artist´s drawingfor Vienna 6s design by Raphael. Photographic collage on acetate and artboard, 254x308 mm, UNIQUE. (Scott #96). (M) (Tax Method: Regular Taxation)

1990, International Trade Center, printer's model for approved Vienna 12s design. Photographic collage mounted on artboard, 380x329mm, UNIQUE. (Scott Vienna #97) (MS) (Tax Method: Regular Taxation)

1990, Aids Prevention, artist´s drawing for proposed Vienna 10s design by Sylvia van Heeswijk (Germany). Acrylic and collage on acetate and card, 254x175 mm, UNIQUE. (Scott Vienna #99/100) (M) (Tax Method: Regular Taxation)

1990, 8-phase progressive die proof for the complete issue (2 values) "UN 45th Anniversary" showing the number "45" in two different designs, mint, NH, 16 stamps in all. (Scott #103/04) (Tax Method: Margin System)

1991, Rights of the Child, Tree Artist´s Drawings for Proposed Vienna Designs by young artists. UNIQUE group. (Scott #117-118). (M) (Tax Method: Regular Taxation)

1992, World Heritage, approved drawing for Vienna 5s design by Robert Stein [USA], photograph and collage, mounted on artboard, 282x235mm, UNIQUE. (Scott #126). (M) (Tax Method: Regular Taxation)

1992, World Heritage, approved die proofs in issued colors for Vienna 5s, 9s, mounted on Cartor presentation card, 211x147mm. (Scott Vienna #125/26) (Tax Method: Regular Taxation)

1992, World Heritage, approved artist`s drawing for Vienna 9s design by Robert Stein [USA], photograph and collage, mounted on artboard, 282x235mm, UNIQUE. (Scott #126). (M) (Tax Method: Regular Taxation)

1993, Endangered Species, approved die proof for Vienna 7s sheet of 16 in issued colors, mounted on Enschede presentation sheet, 297x210mm. (Scott #143-146). (M) (Tax Method: Regular Taxation)

1994, Endangered Species, die essay for Vienna 5s sheet of 16 in issued colors, mounted on Enschede presentation sheet, 235x210mm, these designs were only issued as 7s stamps. (Scott #162-165). (M) (Tax Method: Regular Taxation)

1995, UN 50th Anniversary, Vienna 3s souvenir booklet, imperf. Only three exist, never hinged. (Scott Vienna #192) (Tax Method: Regular Taxation)

1995, UN 50th Anniversary, Vienna approved die proof in issued colors mounted on Swiss PTT presentation card, 210x148 mm. (Scott Vienna #178) (Tax Method: Regular Taxation)

1995, Social Summit, approved artist's drawing for Vienna 14s design by Friedensreich Hundertwasser (Austria). Photographic collage mounted on artboard, 349x405mm, matted, UNIQUE. (Scott Vienna #179) (MS) (Tax Method: Regular Taxation)