20 Dollars - Elizabeth II 4th Portrait - Gregorian Millennium - Bi-Metallic

Issued to mark the year 2000 transition — though struck in 2001, reflecting the technically correct argument that the new millennium began on 1 January 2001 rather than 2000 — this piece sits in a small category of coins where the issuing authority took the pedantically accurate position that most of the public had already moved on from. The Perth Mint's pad-printing technique, used here to achieve the bimetallic appearance without a conventional two-piece blank, was a relatively novel application in commemorative coinage at the time and accounts for the unusual construction noted in the composition data.