Logo Title
obverse
reverse
Perth Mint

100 Dollars – Australia

Non-circulating coins
Commemoration: Koala
Australia
Context
Years: 1999–2000
Issuer: Australia Issuer flag
Currency:
(since 1966)
Total mintage: 2,156
Material
Diameter: 32.1 mm
Weight: 31.1 g
Platinum weight: 31.08 g
Thickness: 2.7 mm
Shape: Round
Composition: 99.95% Platinum
Standard: Silver ounce
Technique: Milled
Alignment: Medal alignment
Obverse
OBVERSE ↑
flip
Reverse
REVERSE ↑
References
KM: #Click to copy to clipboard473
Numista: #239562
Value
Exchange value: 100 AUD = $71.20
Bullion value: $0.00
Inflation-adjusted value: 206.36 AUD

Obverse

Description:
Queen Elizabeth IV, facing right, wearing the Girls of Great Britain and Ireland Tiara.
Inscription:
ELIZABETH II

AUSTRALIA

100 DOLLARS

IRB
Translation:
ELIZABETH II

AUSTRALIA

100 DOLLARS

IRB
Script: Latin
Language: English

Reverse

Description:
Koala eating eucalyptus.
Inscription:
THE AUSTRALIAN KOALA

1 OZ. 9995 PLATINUM

1999
Script: Latin

Edge

Reeded

Categories

Animal> Marsupial

Mints

NameMark
Perth Mint

Mintings

YearMint MarkMintageQualityCollection
1999P108Proof
20002,048BU

Historical background

In 1999, Australia was in the final stages of a significant monetary transition, preparing to introduce a new series of banknotes. This was the second major change in a decade, following the 1996 release of the first polymer series. The 1999 issue, known as the "New Note Series," was not a currency reform but a technological and security upgrade. It featured the same denominations and key design elements as the 1996 series but incorporated enhanced, state-of-the-art security features to stay ahead of counterfeiting threats. This period underscored the Reserve Bank of Australia's (RBA) commitment to maintaining public confidence in the currency through innovation, solidifying Australia's global leadership in secure polymer banknote technology.

Economically, the Australian dollar (AUD) in 1999 was navigating a volatile global landscape, recovering from the aftershocks of the 1997-98 Asian Financial Crisis. The currency had depreciated significantly during the crisis, falling to historic lows near 55 US cents in 1998. By 1999, it was beginning a gradual recovery, buoyed by improving regional conditions and strong commodity exports. Domestically, the economy was stable under an inflation-targeting framework adopted by the RBA in the early 1990s, which provided a solid foundation for the currency's value. However, the AUD remained sensitive to shifts in global risk sentiment and commodity prices, establishing the pattern of a "commodity currency" that characterizes its modern behaviour.

This year also marked a pivotal moment in Australia's monetary history as the nation actively prepared for the upcoming introduction of the Goods and Services Tax (GST) in July 2000. While not a direct change to the currency, the GST's implementation had broad economic implications that influenced monetary policy and public perception of price stability. The RBA was attentive to potential inflationary effects, ensuring its policies would maintain the purchasing power of the dollar. Thus, the currency situation in 1999 was one of proactive stability—securing the physical notes against forgery, managing the dollar's recovery in foreign exchange markets, and calibrating policy for a major fiscal reform—all to ensure a robust monetary system for the new century.

Series: Platinum Issues

50 Dollars obverse
50 Dollars reverse
50 Dollars
1998-1999
100 Dollars obverse
100 Dollars reverse
100 Dollars
1998-1999
200 Dollars obverse
200 Dollars reverse
200 Dollars
1999-2000
15 Dollars obverse
15 Dollars reverse
15 Dollars
1999-2000
25 Dollars obverse
25 Dollars reverse
25 Dollars
1999-2000
50 Dollars obverse
50 Dollars reverse
50 Dollars
1999-2000
100 Dollars obverse
100 Dollars reverse
100 Dollars
1999-2000
Legendary