Australia 1913 Roo Definitives
- Issue dates: 2 January 1913-1914
- Designer: William Blamire Young (1862-1935)
- Engraver: Samuel Reading
- Printer: J.B. Cooke
- Printing process: Engraved
- Perforations: 12
- Watermark: Wide crown over wide A (SG W2)
- Catalogue N°s: Michel 4-18, Yvert 1-15, SG 1-16
The Kangaroo stamp was designed by William Blamire Young, from an idea by the Postmaster General, Mr. Frazer, along with a stamp design competition entry called "Baldy" (the Kangaroo) by Edwin A. Arnold of London. These were the first uniform Commonwealth stamps issued in Australia, replacing the Colonial (or State) issues, although the early design stamps (Colonial or State Issues) remained valid for postage until February 13, 1966 (at which time Decimal Currency came into effect in Australia). The "Roo" issue was in use until 1950, being then replaced by the "Coat of Arms" issue for the high values and the King George VI issue for the lower values.
A one pound (£1) Grey Kangaroo stamp was also prepared but was never released with the normal issue. It was only released as a perfin Official stamp.
There are 2 dies (a lower left frame break was corrected).
SG#7 is skipped.