| Heading and notes: | Form No. E. 19. SOUTH AUSTRALIA spans Crest. TELEGRAM is under the Crest. |
| Message area: | Blank. |
| Reverse side: | Blank. |
| Colours (text & form): | Black on brown. |
| Size of form overall: | 82 × 138 mm. |
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SI-EO-1.
Darwin, NT to Kobe, Japan. Has a 2½d blue definitive punctured OS for the franking as the delivery envelope would have regarded as official mail. |
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SI-EO-1 Delivery envelope for a Cable from Bombay to Crown Solicitors Office, Adelaide. No date indicated. Has URGENT hand stamp in 8 mm high letters in black. |
Details of use and rarity.
| Form sub-number |
Schedule number | Earliest recorded date | Rarity rating |
| EO-1 | None | 6 August 1914 at Darwin. | RR |