Six pence coins were minted from 1910 to 1963.
After 1965 decimal coins were introduced.
From 1910 to 1945 the coins were 92.5% silver
In 1946 the coins were set at .500 silver to help pay off war debts
Most coins were minted in Melbourne or Sydney mints and in USA during the war years .the US minted coins have a small s under coat of arms for San Francisco mint and small D for Denver mint.