The main distinctions amongst the five formats are:
    
      
        | Format | Form number | Front slogans | Rear slogans | Flap | 
      
        | 7A | None | BE PROUD ... and PLAY SAFE ...
 | BE SURE... and SEALED LIPS ....
 | Rectangular | 
      
        | 7B | T.G. 65A | BE PROUD ... and PLAY SAFE ...
 | BE SURE... and SEALED LIPS ....
 | Rounded | 
      
        | 7C | T.G. 65 A | INVEST IN THE ... and SAVE ALL WASTE PAPER
 | BE SURE... and IDLE TALK ....
 | Rectangular | 
      
        | 7D | T.G. 65A | INVEST IN THE FUTURE ... and SAVE ALL WASTE PAPER
 | BE SURE... and IDLE TALK ....
 | Rounded | 
      
        | 7E | T.G. 65 A | INVEST IN THE FUTURE ...and either
 SWITCH OFF and ...
 or SAVE ALL ...
 | BE SURE... and IDLE TALK ...
 | Rounded | 
      
        | 7F | T.G. 65A | SAFEGUARD .. VICTORY BONDS and LET'S FINISH THE JOB ...
 | BE SURE... and THE JOB'S NOT DONE ...
 | Rounded | 
    
      
    
      
        |  | AW-EU-7A. Characteristics: 
            no form number;"G" in the heading has no horizontal bar;window does not extend to the borders at the sides;thick border around window.   | 
      
        |  | AW-EU-7A (reverse). Reverse side of the above delivery envelope; Characteristics: 
            flap has a rounded peak and straight sides;two boxed slogans with decorations in the corners for "BE PROUD ..." and "PLAY SAFE ...". | 
    
    
      
        |  | AW-EU-7B. Used at a US Army Post Office.8 December 1943.
 Characteristics: 
            form number T.G. 65A in small letters;"G" in the heading has no horizontal bar;window does not extend to the outside border;thick border around window;plain box around first slogan and the slogans on the reverse are unboxed. These changes appear to have been made in 1943;security pattern shows NATIONAL through the window and has MADE IN AUSTRALIA near the join. | 
      
        |  | AW-EU-7B (reverse side). American Base Forces            A.P.O. 561.8 December 1943.
 Also a RECEIVED handstamp for H.Q. U. S. Army Postal Service.
 Envelope has been cut open and so part of one side (at right on reverse side) is missing. 
            flap has a rounded peak with straight sides;neither slogan is boxed;2nd slogan is for SEALED LIPS SAVE SHIPS. | 
    
    
      
        |  | AW-EU-7C. Unused urgent rate delivery envelope; Characteristics: 
            has form number in the top left corner;advertisement is for "INVEST IN THE FUTURE  ...";lower slogan is for "SAVE ALL  ..."; 
            both "G"s in the heading have a horizontal bar;one slogan on the front and both  slogans on the reverse are boxed with thin lines and small decorations in each corner;window extends to borders at sides and below;window and border  32 mm high;thin border around window. | 
      
        |  | AW-EU-7C (reverse). Reverse side of the above delivery envelope. Characteristics: 
            a rectangular flap with straight sides;slogans are both boxed; the  wide red border has been miscut and does not align.    | 
      
        |  | AW-EU-7D. Characteristics: 
            has form number;window  extends to the borders at the sides;no text on security pattern;text for slogans is thicker;border around the window is thicker; | 
      
        |  | AW-EU-7D (reverse). Reverse side of the above delivery envelope. Characteristics: 
            flap has a rounded peak and straight sides. | 
    
    
      
        |  | AW-EU-7E. Characteristics: 
            has form number;top slogan is bowx and there are no decorations in the corners of the box;2nd slogan is for SWITCH OFF ...;window  extends to the borders at the sides;has NATIONAL on the security pattern. This format is also known with SAVE ALL WASTE PAPER as the 2nd slogan. | 
      
        |  | AW-EU-7E (reverse). Reverse side of the above delivery envelope. Characteristics: 
            flap has a rounded peak and straight sides;unboxed slogans for BE SURE TO ... and IDLE TALK ... | 
    
  
    
      
        |  | AW-EU-7F. Used at a US Army Post Office on 19 June 1946. Characteristics: 
            form number T.G. 65 A in small letters;thick border around window;window extends to the outside border;both slogans introduce post-war strategies with the emphasis on VICTORY BONDS - they are SAFEGUARD YOUR FUTURE ... andLET'S FINISH THE JOB ...;
plain box around the first slogan while the second slogan is unboxed;security pattern shows NATIONAL through the window and has MADE IN AUSTRALIA near the join. | 
      
        |  | AW-EU-7F (reverse). Flap has a rounded peak with slightly curved sides.           
            neither slogan is boxed;slogans on reverse are BE SURE TO ... and THE JOB'S NOT DONE .... | 
    
    Details of use and rarity.
    
      
        | Form sub-number
 | Schedule number | Earliest recorded date | Rarity rating | 
      
        | EU-7A | None. |  | C | 
      
        | EU-7B | None. | 8 December 1943 at American Forces Base APO 561. | C | 
      
        | EU-7C | None. |  | C | 
      
        | EU-7D | None. |  | C | 
      
        | EU-7E | None. |  | C | 
      
        | EU-7F | None. | 19 June 1946 at an A.P.O Postal Service. | C |