| Heading and notes: | No form number. Heading is INTERNATIONAL TELEGRAM in two lines. |
| Message area: | Blank. |
| Reverse side: | Name, logo and information. |
| Colours (text & envelope): | Blue on cream. |
| Size of envelope overall: | 91 × 165 mm. |
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IAO-EO-1.
Used in Melbourne - probably on 17 September 1950 with OTC delivery form IAO-DO-1B. |
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IAO-EO-1 (reverse).
Reverse side of th above delivery envelope showing the logo and the information about the OTC Offices in Sydney and Melbourne. |
Details of use and rarity.
| Form sub-number |
Schedule number | Earliest recorded date | Rarity rating |
| EO-1 | None | 3 November 1947 at ??. | R |