50 Cents - Elizabeth II 2nd Portrait - Pattern


Country Australia
Queen Elizabeth II (1952-date)
Type Pattern
Year 1966
Value 50 Cents (0.50 AUD)
Currency Dollar (1966-date)
Composition Silver (.800)
Weight 13.28 g
Diameter 31.51 mm
Thickness 2.5 mm
Shape Round
Orientation Medal alignment ↑↑
Demonetized Yes
Number N# 122866
Numista (https://numista.com)
References KM# Pn29
Tracy L. Schmidt (editor); 2019. Standard Catalog of World Coins / 2001-Date (14th edition). Krause Publications, Stevens Point, Wisconsin, USA.
And 4 more volumes.


2nd portrait of Queen Elizabeth II facing right wearing the Girls of Great Britain and Ireland Tiara


Engraver: Arnold Machin

Arnold Machin O.B.E., R.A. was a British artist, sculptor, coin and stamp designer.


Australia coat of arms (the escutcheon is carried by a red kangaroo (Macropus rufus) and an Emu (Dromaius novaehollandiae)) and the numeral "50".
Designer's mark "SD" below.


Engraver: Stuart Devlin

Stuart Leslie Devlin, AO, CMG is a significant contemporary gold and silversmith. Australian-born, he has designed coins for countries around the world, and became especially well known as London-based designer of gold and silver collector's items in the 1970s and 80s.




Royal Australian Mint, Canberra, Australia (1965-date)


This coin is extremely interesting, it is a pattern of Australia's round 50 cents coin from 1966 was only discovered in Sydney in August 2008. The revelation of it's existence, and an examination of the background to it's production indicates that there was an evolution towards the final designs that were used on Australia's largest circulating decimal coin.

The pattern 50 cents is one of between two and possibly nine such coins in private hands. In the early 1970's, it was rated equal to Australia's most desirable and historically important rare coins, and has a direct relationship to what is arguably the most controversial chapter in the history of the Royal Australian Mint (RAM)

The fact that the pattern has slight differences to those coins struck for circulation and inclusion in proof sets shows that the eminent British engraver and sculptor Arnold Machin used more than one plaster model during the production process of Australia's first decimal coins. Until now, the vast majority of Australian numismatists will not have been aware that more than one obverse type was in use on our national coinage between 1966 and 1984.

The pattern exhibits the following characteristics that are not seen on the coins struck for inclusion in proof sets or for circulation:


Numismatic study of the pattern reveals the causes of the difficulty that RAM staff had in striking Australia's decimal coinage, as well as on the changes to the obverse and reverse designs that were introduced so the coin could be manufactured effectively.

All pictures courtesy of Sterlingcurrency ...

See also

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Date Mintage VG F VF XF AU UNC
1966  2 Pattern (2 known to exist)

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Numista Rarity index: 83 Search tips
This index is based on the data of Numista members collections. It ranges from 0 to 100, 0 meaning a very common coin or banknote and 100 meaning a rare coin or banknote among Numista members.

Bullion value: 8.81 USD Search tips
This value is given for information purpose only. It is based on a price of silver at 830 USD/kg. Numista does not buy or sell coins or metal.

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