| Heading and notes: | Form number E.T. No. 1. Has standardised interim period heading with State name. |
| Message area: | 30 boxes in 6 rows of 5. |
| Reverse side: | Blank. |
| Colours (text & form): | Red on buff. |
| Size of form overall: | 143 × 223 mm. |
Provenance: Dave Elsmore. |
SI-DO-3.
Rialto, Melbourne to Telegraphs Adelaide. Characteristics:
|
Details of use and rarity.
| Form sub-number |
Schedule number | Earliest recorded date | Rarity rating |
| DO-3 | None. | 6 April 1908 at Telegraphs Adelaide. | RR |