| Heading and notes: | Form Number E.T. 7. Heading is CABLEGRAM OR RADIOGRAM. |
| Message area: | 11 lines for message. |
| Reverse side: | Blank. |
| Colours (text & form): | Black on cream. |
| Size of form overall: | 215 × 203 mm. |
![]() Printed in July 1928. |
IAB-TC-3.
Unused transmission form. |
Details of use and rarity.
| Form sub-number |
Schedule number | Earliest recorded date | Rarity rating |
| IAB-TC-3 | Sch. C.220. - 6/1927 | No used form recorded | RR (unused) |
| Sch. 337 .7/1928. | No used form recorded. | RR (unused) |