1 Dollar

Australia's paper $1 note was replaced by a coin in 1984, making this series the last of its denomination in note form. The Phillips & Wheeler signature combination dates to the earliest issues; by the time Johnston & Stone signed, the note was already in its final years of production. The DBP-prefix test notes — distinguishing thick from thin paper stock by serial number threshold — represent a documented internal trial that collectors have since turned into a minor subspecialty. Security thread placement also varied across the run, with center versus side positioning creating additional catalogued varieties within what looks at first like a uniform series.