|  | NI-DO-6A. Brisbane to Oxford Street NSW24 July 1909.
 Characteristics: 
          first printing (one arc);two vertical lines of text at left "Note: - the figures at the bottom ...";very small font under TELEGRAM for "This message ...";7 faint lines for message.   
 | 
      
        |  | NI-DO-6B. Rockhampton to Sydney(Telegraph Branch
 5 April 1911).
 Characteristics: 
            first printing (one arc);one vertical line of text at left "Note: - the figures at the bottom ...";larger font (2 mm) under TELEGRAM for "This message ...";7 faint lines for message.   Has very large DELAYED BY INTERRUPTION TO LINE hand stamp in violet. Telegram has words in code which have been interpreted. | 
      
        |  | NI-DO-6C. Brisbane to Oxford Street NSW(24 July 1909).
 Characteristics: 
            first printing;one vertical lines of text at left "Note: - the figures at the bottom ...";larger font under TELEGRAM for "This message ...";no printed lines for message. | 
      
        |  | NI-DO-6D. St. Arnaud, Vic to Yass.5 August 1915.
 Characteristics: 
          second printing (two arcs after schedule number and above WALES);one line of vertical text at left;8 lines for message. There is no difference in format between this form and that below. Here the form has been slightly over-inked during printing. The seven lines in the message area  are so heavy that the dots join and can be only seen as dots for a few mm in parts. | 
      
        |  | NI-DO-6D (same form as above). Dubbo to Obley.20 November 1918.
 NOTE: Not a different format but a different printing day or location. The message area has seven lines of dots which are quite distinct. | 
    
    Details of use and rarity.
    
      
        | Form sub-number
 | Schedule number | Earliest recorded date | Rarity rating | 
      
        | DO-6A | St 3481 | 24 July 1909 at Oxford Street, NSW. | NC | 
      
        | DO-6B | St. 3481 | 9 March 1911 at Bondi, NSW. | C | 
      
        | DO-6C | St. 3481 | 24 July 1909 at Oxford Street, NSW. | NC | 
      
        | DO-6D | St. 3481 | 5 August 1915 at Yass, NSW | NC |