| Heading and notes: | Form number E.T. No. 1. TELEGRAM in sans serif font under C of A heading with one sentence underneath. |
| Message area: | 25 boxes in 5 lines. |
| Reverse side: | Blank. |
| Colours (text & form): | Black on white. |
| Size of form overall: | 128 × 205 mm. |
| Size of datestamp box: | 26 × 45 mm. |
Details of use and rarity.
| Form sub-number |
Schedule number | Earliest recorded date | Rarity rating |
| TO-3A | B.1431/12.23 - C.18753 | RRR | |
| TO-3B | None | Probably 9 May 1929. | RR |
| TO-3C | None | Probably 14 March 1925. | RR |
| TO-3D | RR |