1943 Australia Australian One 1 Penny Kangaroo WWII Era Coin

1943 Australian Penny featuring a kangaroo on the reverse side. This coin is part of Australia's pre-decimal currency system, which was based on the British imperial system of pounds, shillings, and pence.
Key features and historical context:
Design: The reverse side of the coin shows a leaping kangaroo. George Kruger Gray created this design, which was introduced in 1938. The obverse side would have featured King George VI, the reigning monarch at the time.
Composition: Australian pennies from 1943 were made of bronze, which is about 97% copper, 2.5% zinc, and 0.5% tin.
Minting: These pennies were minted in Melbourne (without a mintmark), Perth (with a dot mintmark), and Bombay, India (marked with an "I" under the monarch's bust, used on 1942 and 1943 pennies and half-pennies).
Pre-Decimal System: Australia used this system until February 14, 1966, when the Australian dollar and cents were introduced. One Australian penny equaled 1/12th of an Australian shilling