| Heading and notes: | Form number E. T. No. 3. Standard Interim heading. |
| Message area: | Blank. |
| Reverse side: | Blank. |
| Colours (text & form): | Black on salmon coloured paper. |
| Size of form overall: | 192 × 224 mm. |
| Size of datestamp box: | 34 × 33 mm. |
Details of use and rarity.
| Form sub-number |
Schedule number | Earliest recorded date | Rarity rating |
| DU-2B | 150000 - 13.7.10 E10 | 16 March 1911 at Adelaide. | RR |
| DU-2C | None | 31 December 1913 at Adelaide. | RR |