| Heading and notes: | No form number. TASMANIA is above ELECTRIC TELEGRAPH which spans the 39 mm Crest. |
| Message area: | 7 lines. |
| Reverse side: | Blank. |
| Colours (text & form): | Black on blue. |
| Size of form overall: | 165 × 220 mm. |
Details of use and rarity.
| Form sub-number |
Schedule number | Earliest recorded date | Rarity rating |
| DO-3A | 25,000 | 1 | 74 | 25 August 1874 at Brighton. | R |
| 10,000 | 7 | 74 | 30 October 1874 at Green Ponds. | NC | |
| 10,000 | 12 | 74 | 4 February 1875 at Bothwell. | NC | |
| 20,000 | 12 | 74 | 22 February 1875 at ??. | NC | |
| 20,440 | 3 | 75 | 2 February 1876 at Queenstown. | NC | |
| DO-3B | None. | 6 August 1877 at Sorell. | NC |