The Bluebird design replaced the previous 1934 Scroll design in May 1939.
    
An alternative, smaller size was introduced in 1941 as a war-time economy measure (AB-GBF-39B).
    The telegram delivery forms with ornamental designs were all discontinued in 1942 also as part of the War effort.
    
      
        |  Thanks to Ross Ewington of Tasmanian Stamp Auctions for finding this early date and letting me know.
 | AB-GBF-39A. Moonah to Hobart.
 (11 December 1938).
 Characteristics: 
    size is 152 × 202 mm;has line of text at base;line under heading contains "Words" and "Time Lodged";   | 
      
        |  | AB-GBF-39B. Melbourne to Elwood(10 February 1942) with scarce oval P&T date stamp.
 Characteristics: 
            size is smaller at115 × 190 mm;
line of text at base has been moved to be under the heading;line under heading contains "No. of Words" and "Time of Lodgement";hills in the background of the heading are lighter in colour and more distinguishable from the sky. | 
      
        |  | AB-GBE-39A. Unused opaque delivery envelope. Characteristics:   | 
      
        |  | AB-GBE-39B. Unused window envelope with no border around the window. Characteristics: | 
      
        |  | AB-GBE-39C. Used window envelope. Characteristics: 
             navy blue border around the window;form number isTG 65P. - the same number as the window delivery envelope with no border (GBE-39B).
   | 
      
        |  | AB-GBE-39D.  Used on 24 March 1939 at Elizabeth Street/Melbourne (date stamp on reverse) Characteristics: 
            dark blue border around the window. form number isTG. 65H. - the same number as the opaque delivery envelope (GBE-39A).
 | 
    
    Details of use and rarity.
    
      
        | Form sub-number
 | Schedule number | Earliest recorded date | Rarity rating | 
      
        | GBF-39A | None | 17 December 1938 at Monah, Tas | Rated: 
          C as  unused;
 R if used on forms or on envelopes.
 
 RR if a form and envelope  are demonstrably tied together.
 | 
      
        | GBF-39B | None | 8 January 1942 at Hindmarsh, SA. | 
      
        | GBE-39A | None | 13 September 1939 at Coburg, Vic. | 
      
        | GBE-39B | None |  | 
      
        | GBE-39C | None |  | 
      
        | GBE-39D | None. | 24 March 1939 at Elizabeth Street, Melbourne. |