Exhibitions and Fairs: Platypus Cuppex 87 opt, Echidna Sydpex 88 opt with 60c wrong denomination, Lizard Essen 90 (two different machines), Lizard B17 cliche used at Brisbane Stamp Show 90 on cover, Emu 3000 postcode used temporary installation for G.P.O. Melbourne Staff Expo on cover (6)