2000 Millennium $20 Bi-Metal Coin, rev. 'THIRD MILLENNIUM FIRST DAY' on silver surround, 22ct gold centre depicting Australia on globe, agw 0.27oz, asw 0.161oz, boxed with certificate #5066 and cardboard outer (as new). (Image1)

Estimate AU$600

2001 Gregorian Millennium $20 Bi-Metal Coin, rev. 'GREGORIAN MILLENNIUM' on 24ct gold outer ring, silver centre depicting watch face at 8am WA time, Greenwich UK, and three globes, agw 0.27oz, asw 0.161oz, boxed with certificate #6562 and cardboard outer. (Image1)

Estimate AU$600

(2001) Federation Floral Emblems $20 Bi-Metal Coin, rev. centre 24ct gold, Australian Coat of Arms within seven pointed star, silver surround depicting floral emblems for each state, agw 0.285oz, asw 0.346oz, boxed with certificate #0339 and cardboard outer (as new). (Image1)

Estimate AU$600