General characteristics:
| Heading and notes: | Form number E.T. No. 2 (but not printed on the first three formats). Combined form and delivery envelope format. |
| Message area: | Blank. |
| Reverse side: | Blank. |
| Colours (text & form): | Black on green (but many variations of green). |
| Size of form overall: | 188 × 201 mm. |
| Size of datestamp box: | 26 × 22 mm (3rd format only). |
Distinctive characteristics of the form:
The form was folded along printed lines and then sealed with gummed tabs so that the message area was completely enclosed. It was opened by tearing along the gummed tabs - not always an easy task. The folded form was very small - see below. Urgent rate forms with the same design were also printed.
For some reason, the trial using the experimental forms was considered to be a success. So, in April 1918, the Post Office Monthly Circular contained the following:
TELEGRAPH: Combined Form and Envelope.
Approval has been given that the use of the combined telegraph form be extended to all offices throughout the Commonwealth, but the existing supply of forms and envelopes should be used up to prevent waste.
Five versions of this design were printed over the next few years. The forms were however unpopular by all concerned:
An example of the public opposition to the format is reflected by the account reprinted in a number of newspapers including the Mullumbimby Star of 10 July 1919:
Folded Telegram Form.
"Convenience or economy as represented in the telegram — or 'puzzlegram' as it is facetiously termed by flippant critics — was the subject of passing reference in the House of Representatives on Wednesday. Mr. Higgs (Q.) desired information as to when the ridiculous folding telegram form produced through the genius of Mr Webster was to be abolished and another form substituted whereby the taxpayer might have a reasonable chance of reading the telegram when he received it.
The Postmaster-General, states the Age, assumed an air of calm indifference. Further provoked by Mr. Higgs, however he protested that the telegram form at present utilised represented a saving of £7000 a year".
"And the loss of 7,000 souls" said the Queensland member".
In the Federal Parliament sitting of the House of Representatives on 21 April 1920, Dr. Earle Page (N.S.W.) was "informed ...of the suggestion that the use of envelopes for telegrams be reverted to".
In addition to the public's negative reaction, new printing equipment was being purchased which could not easily accommodate the more complex design easily. The combined forms were therefore abandoned about 1921 as is shown by the following announcement in the April 1921 Post Office Monthly Circular:
... it is hereby notified that it has been decided to discontinue the use of the combined form and envelope when the present supplies are exhausted,
and revert to the previous system.
The press release appearing in many newspapers was as follows:
"End of Self-folding Telegram Form."
No image yet available.
AE-DO-1A.Characteristics:
This form may have been trialled in NSW.
This form may have been printed and trialled in Western Australia.
See also the reference in the Table at the base of this page for AE-DO-1D
where this is another form included for HMAS Australia.
Printed February 1917.
Printed in April 1918.
Printed in April 1918 (and with same schedule number as the previous form).
Printed July 1919.
Printed July 1920.Details of use and rarity.
| Form sub-number |
Schedule number | Earliest recorded date | Rarity rating |
| DO-1A | Print number 25934 and St 7427. (H) | 1 November 1918 at Cootamundra. | RRR |
| DO-1B | Index 1019 and L 9565/19*15. | 29 May 1919 at Fremantle, WA. Sent to HMAS Australia. | |
| DO-1C | B.774/2.17. - C.1823. | 28 June 1917 at CETO Melbourne. | RR |
| B.774/2.17. - C.9910. | 8 April 1918 at Adelaide. | RR | |
| DO-1Da | B.774/2.17. - C.3034. | 8 April 1919 at Rockdale, NSW. | R |
| B.774/4.18 - C.4697 | 12 June 1919 at Port Melbourne, Vic. Sent from (HMAS Australia.) | R | |
| B. 774/4.18. - C.5649. | 29 July 1918 at Hobart. | R | |
| B.774/2.19. - C.1590. | 20 June 1919 at CETO Melbourne. | R | |
| DO-1Db | L 9565/19 * 15 | 29 May 1919 at Fremantle | RRR |
| DO-1Ea | B.1024/7.19. - C.8666. | 21 October 1919 at CETO Melbourne. | NC |
| B.1024/12.19. - C.18843. | 17 July 1920 at Burnley, Vic. | NC | |
| B.1024/7.20. - C.6321. | 16 November 1920 at Maryborough, Qld. | NC | |
| DO-1Eb | B.1024/7.20. - C.6321. | 25 January 1921 at Windsor, NSW. | RRR |