| Heading and notes: | Form number E.T. No. 7. Standard Interim heading of Commonwealth of Australia over CABLEGRAM. | 
| Message area: | Boxed or lined. | 
| Reverse side: | Blank. | 
| Colours (text & form): | Blue on cream. | 
| Size of form overall: | 193 × 210 mm. | 
|  Printed in July 1915. | IVI-DC-2Aa. Cairo to C.E.T.O. Melbourne Sent by Eastern. Characteristics: 
 | 
|  Printed in April 1916. | IVI-DC-2Ab. London to Preston Sent by Eastern. Characteristics: 
 
 | 
Details of use and rarity.
| Form sub-number | Schedule number | Earliest recorded date | Rarity rating | 
| DC-2Aa | C. 23315 (?) | 25 July 1915 at East Melbourne. | R | 
| B. ????/ 10.14. - C.14278 (?) | 27 October 1915 at C.E.T.O. Melbourne. | ||
| B. 543 /7.15 - C. 9007. | 24 March 1916 at C.E.T.O. Melbourne. | R | |
| DC-2Aa | B. 543 /4.16 - C. 1458. | 8 June 1917 at Preston, Vic. | R |