Delta Stamps Fact File No. 5
     

Self Adhesive Printings with Hidden Code Letters within Iridescent wavyline 'Royal Mail' text

 

Click on the symbol for the associated item(s) in our Price List.

Wavyline 'ROYAL MAIL' text as a background

Post & Go (Faststamps) were introduced in October 2008 with the design utilising a version of the Millennium Head and introducing a repeating wavyline 'ROYAL MAIL' text as a background pattern. As with the Millennium Head version, the Post and Go stamps are printed in a brownish olive colour.


In an attempt to address problems with the reuse of stamps that had already been through the postal system and not been cancelled a raft of additional security features were introduced on 17th February 2009 and would become the new standard for all future printings. Initially, these were applied to the 2nd and 1st class NVI, 2nd and 1st Large NVI, 50p, £1, £1.50, £2, £3, and £5 sheet printings. Booklets and Business Sheets were the next to be reprinted with these additional security features and overtime the full range has been brought into align. This introduction has seen the move to using self adhesive paper as the standard across for the Royal Mail product range. The additional security features include :-

Hidden Source Code Letters in the Iridescent wavyline 'ROYAL MAIL' text

As a means of identifying the source of a stamp, a hidden code letter has been applied to printings that do NOT come from counter sheets. These hidden source code identification letters occur in just one position per stamp and are :-

The iridescent ink appears to be printed as a solid layer with the wavyline 'ROYAL MAIL' text engraved as part of that layer. Thus, any problems in synchronisation will throw up a new range of insets, etc. The diagrams below show the iridescent layer as a pale grey.

The first issue to carry the hidden source code letter was the British Design Classic 1 booklet (issued 10th March 2009). These booklets yield two variants from those of the basic counter sheets printings of 17th February 2009. The iridescent wavyline 'ROYAL MAIL' text has the hidden source code letter - "C" (indicating the stamp comes from a Customised booklet printing) changing the word 'MAIL' to 'MCIL'. This change occurs on just the word in the top right corner - above the diadem. Additional, 'U' shaped die cuts have a bridge at base of U unlike their De La Rue counterparts that are continuous.

6x1st Design Classics 1 booklet pane (issued 10th March 2009)

Type 1 (see below) wavyline 'ROYAL MAIL' Text
with code letter 'C' substituting 'A' in the word MAIL

Hidden Source Code Letter settings

Type II (see below) Large NVI wavyline 'ROYAL MAIL' Text
with code letter 'F' substituting 'R' in the word ROYAL

The setting or positioning of the Hidden Source Code within the wavyline 'ROYAL MAIL' text pattern produces five types (note : the 'Large' NVI values have a different phasing of wavyline design) :-

Type I
Type II
Type III
Type IV
Type V
  Type I Standard size definitives [ex Booklets of 6, 12, Business Sheets and Rolls]
    with the word 'MAIL' unchanged [ex counter sheets]
    with the word 'MAIL' having a substitution of the letter 'A' e.g 'MSIL', 'MTIL', etc
  Type II Large NVI [ex Booklets of 4 - issued 2009]
    with the word 'ROYAL' unchanged [ex counter sheets]
    with the word 'ROYAL' change to 'FOYAL'; coming out of the central cross of the diadem
  Type III Large NVI [ex Business Sheets]
    with the word 'ROYAL' changed to 'ROYBL' coming out of the front jewels of the diadem
  Type IV Large NVI [ex Booklets of 4 - 2010 issue]
    with the word 'MAI' (clipped off 'L') changed to 'MFI' coming out of the rear of the central cross of the diadem
  Type V Large NVI [ex Booklets of 4 and Business Sheets - 2011 issue]
    with the word 'MAIL' changed to 'MBIL' or 'MFIL' coming out of the rear of the Queens dress
  Type VI Large NVI [ex Booklets of 4 and Business Sheets - 2014 issue]
    with the word 'MAIL' changed to 'MBIL' or 'MFIL' in front of the Queens front curl of hair

Summary of Normal / Hidden Source Code Letters used :-

 
ROYAL
MAIL
Setting
Format Source
ROYAL
MAIL
n/a
50p, £1, etc Counter sheets
 
ROYAL
MAIL
n/a
50x2nd and 50x1st Counter sheets
 
ROYAL
MCIL
I
6x1st Customised Booklets
 
ROYAL
MRIL
I
10,000x2nd and 10,000x1st Coils (Rolls)
 
ROYAL
MSIL
I
6x1st Booklets
 
ROYAL
MTIL
I
12x2nd and 12x1st Booklets
 
ROYAL
MBIL
I
100x2nd and 100x1st Business Sheets
 
 
ROYAL
MPIL
I
2x50p, 2x2nd and 4x1st mixed pane Prestige Booklet
 
ROYAL
MMIL
I
10x1st Arnold Machin Centenary Mini Sheet
 
 
ROYAL
MAIL
n/a
50x2nd and 50x1st Large Counter sheets
 
FOYAL
MAIL
II
4x2nd Large and 4x1st Large Booklets
 
ROYAL
MFIL
IV
4x2nd Large and 4x1st Large Booklets (2010)
 
ROYAL
MFIL
V
4x2nd Large and 4x1st Large Booklets (2011)
 
ROYBL
MAIL
III
50x2nd Large and 50x1st Large Business Sheets
 
ROYAL
MBIL
IV
50x2nd Large and 50x1st Large Business Shts (2010)
 
ROYAL
MBIL
V
50x2nd Large and 50x1st Large Business Shts (2011)
 
ROYAL
MBIL
VI
50x2nd Large and 50x1st Large Business Shts (2014)

Secondary (Year) Hidden Code within the Iridescent wavyline 'ROYAL MAIL' text

A secondary hidden code was introduced into the iridescent wavyline text from 2010 and designated the year the printing was made for. As with the hidden source codes the year code occurs in only one set position. Interestingly, the iridescent cylinder numbers have not changed with the advent of the secondary year codes although replacement cylinders must have been engraved. Currently, the three years of printings so far have provided :-

Year
Code
Letter Substitution
2009
None
N/A
2010
10
MAIO both sizes
2011
11
MIIL; Large MAII
2012
12
MI2L; Large MAI2
2013
13
MI3L; MAI3
2014
14
MI4L; MAI4

As with the Hidden Source Codes the Year Codes have various settings, namely :-

Type A
Type B
Type C
Type D
  Type A 2010 Standard size definitive NVI [ex Booklets of 6, 12, Business Sheets and Rolls]
      with the word 'MAIL' having a substitution of the letters 'IL' to 'MAIO' in front of the Queens forehead
  Type B 2010 Large NVI [ex Booklets of 4, Business Sheets and Sheets]
      with the word 'MAIL' having a substitution of the letters 'IL' to 'MAIO' in front of the Queens eyebrow
  Type C 2011 Standard size definitive NVI [ex Booklets of 6, 12, Business Sheets and Rolls]
      with the word 'MAIL' having a substitution of the letters 'AI' to 'MIIL' above and left of front curl of hair
    2012 with the word 'MAIL' having a substitution of the letters 'AI' to 'MI2L' above and left of front curl of hair
    2013 with the word 'MAIL' having a substitution of the letters 'AI' to 'MI3L' above and left of front curl of hair
    2014 with the word 'MAIL' having a substitution of the letters 'AI' to 'MI4L' above and left of front curl of hair
  Type D 2011 Large NVI [ex Booklets of 4, Business Sheets and Sheets]
      with the word 'MAIL' having a substitution of the letters 'IL' to 'MAII' above the letter 'e' of 'Large'
    2012 with the word 'MAIL' having a substitution of the letters 'IL' to 'MAI2' above the letter 'e' of 'Large'
    2013 with the word 'MAIL' having a substitution of the letters 'IL' to 'MAI3' above the letter 'e' of 'Large'
    2014 with the word 'MAIL' having a substitution of the letters 'IL' to 'MAI4' above the letter 'e' of 'Large'

First Series - without Year Codes (2009)

Sheet Printings
  Value Source Printer    
50p Grey Counter Sheets De La Rue No hidden Source code letter  
  £1 Ruby        
  £1.50        
  £2        
  £3        
  £5        
  2nd NVI Counter Sheets De La Rue No hidden Source code letter  
  1st Gold        
  2nd Large NVI Counter Sheets De La Rue No hidden Source code letter  
  1st Large Gold        
  1st RSF Counter Sheets De La Rue No hidden code letter [17 Nov 2009]  
  1st Large RSF        
Booklets, Business Sheets and Rolls
  Value Format Source Printer
Source Letter
Setting
  2nd NVI 12x2nd Booklets Walsall
MTIL
I
  1st Gold 6x1st    
MSIL
I
  1st Gold 12x1st    
MTIL
I
  2nd Large NVI 4x2nd Large    
FOYAL
II
  1st Large Gold 4x1st Large    
FOYAL
II
  2nd NVI 100x2nd Business Sheets De La Rue
MBIL
I
  1st Gold 100x1st    
MBIL
I
  2nd Large NVI 50x2nd Large    
ROYBL
III
  1st Large Gold 50x1st Large    
ROYBL
III
  2nd NVI 10,000x2nd Coils (Rolls) De La Rue
MRIL
I
  1st Gold 10,000x1st    
MRIL
I
Custom Booklets
  Value Edition   Issue Date Printer
Source
Setting
6x1st Design Classics 1 Telephone Kiosk 10 Mar 2009 Walsall
MCIL
I
  6x1st Design Classics 2 Mini 21 Apr 2009  
MCIL
I
  6x1st Flowers *1 21 May 2009  
MCIL
I
  6x1st Design Classics 3 Concorde 18 Aug 2009  
MCIL
I
  6x1st Design Classics 4 Mary Quant 17 Sep 2009  
MCIL
I
  6x1st Olympic 1 Judo 7 Jan 2010  
MCIL
I
  *1 This edition carries a constant variety. 'MAIL' has the "A" missing in front of the Queens lips.

Second Series - with Year Codes (2010-2014)

Year Code MAI0 Year Codes MIIL, MI2L, MI3L,MI4L
Standard NVI Sheets, Booklets, Business Sheets and Rolls
  Value Source Issue/Edition Printer
Source Letter
Year Code
Setting
68p Sheet   De La Rue
MAIL
MIIL
C
  76p      
MAIL
MIIL
C
  £1 Ruby      
MAIL
MIIL
C
  £1.10      
MAIL
MIIL
C
  £1.65      
MAIL
MIIL
C
  1p Sheet   De La Rue
MAIL
MI2L
C
  2p      
MAIL
MI2L
C
  5p      
MAIL
MI2L
C
  10p      
MAIL
MI2L
C
  20p      
MAIL
MI2L
C
  50p Slate grey      
MAIL
MI2L
C
  68p      
MAIL
MI2L
C
  76p      
MAIL
MI2L
C
  87p      
MAIL
MI2L
C
  £1 Ruby      
MAIL
MI2L
C
  £1 Wood Brown      
MAIL
MI2L
C
  £1.28      
MAIL
MI2L
C
  £1.90      
MAIL
MI2L
C
  10p Sheet   De La Rue
MAIL
MAI3
C
  20p   Jul 2013 De La Rue
MAIL
MAI3
C
  78p   27th Mar 2013 Walsall
MAIL
MI3L
C
  78p   Jun 2013 De La Rue
MAIL
MAI3
C
  88p   27th Mar 2013 Walsall
MAIL
MI3L
C
  88p   Apr 2013 De La Rue
MAIL
MAI3
C
  £1.28   Apr 2013 De La Rue
MAIL
MAI3
C
  £1.88   27th Mar 2013 Walsall
MAIL
MI3L
C
  £1.88   Apr 2013 De La Rue
MAIL
MAI3
C
  £2   Apr 2013 De La Rue
MAIL
MAI3
C
  The 78p, 88p and £1.88 values from Presentation Packs have the year code MAI3
  10p Sheet Apr 2014 De La Rue
MAIL
MI4L
C
  20p   Apr 2014  
MAIL
MI4L
C
  81p   26th Mar 2014  
MAIL
MI4L
C
  97p   26th Mar 2014  
MAIL
MI4L
C
  £1   Apr 2014  
MAIL
MI4L
C
  £1.28   Apr 2014  
MAIL
MI4L
C
  £1.47   26th Mar 2014  
MAIL
MI4L
C
  £2.15   26th Mar 2014  
MAIL
MI4L
C
2nd Sheet n/a De La Rue
MAIL
MAIO
A
  1st Gold      
MAIL
MAIO
A
  1st RSF      
MAIL
MAIO
A
  SD to 100g      
MAIL
MAIO
A
  SD to 500g      
MAIL
MAIO
A
  2nd Sheet n/a De La Rue
MAIL
MIIL
C
  1st Gold      
MAIL
MIIL
C
  2nd Sheet n/a De La Rue
MAIL
MI2L
C
  1st RM Red      
MAIL
MI2L
C
  2nd Sheet n/a De La Rue
MAIL
MAI3
C
  1st RM Red      
MAIL
MAI3
C
  1st RMSF      
MAIL
MAI3
C
  2nd Sheet Mar 2014 De La Rue
MAIL
MI4L
C
  1st RM Red   Apr 2014  
MAIL
MI4L
C
  SD to 100g   Aug 2014  
MAIL
MI4L
  6x1st Gold Booklets 'postcodes4free' Walsall
MSIL
MAIO
I A
  6x1st Gold   Festival of Stamps  
MSIL
MAIO
I A
  6x1st Gold   No Imprint  
MSIL
MAIO
I A
  6x1st Gold   No Imprint  
MSIL
MIIL
I C
  6x1st Gold   FSC logo  
MSIL
MIIL
I C
  6x1st RM Red   FSC logo  
MSIL
MI2L
I C
  6x1st RM Red   FSC logo  
MSIL
MI3L
I C
  6x1st RM Red   FSC logo  
MSIL
MI4L
I C
  12x2nd Booklets Wide side tab Walsall
MTIL
MAIL
I
  12x2nd   Wide side tab  
MTIL
MAIO
I A
  12x2nd   No Imprint  
MTIL
MAIO
I A
  12x2nd   No Imprint  
MTIL
MIIL
I C
  12x2nd   FSC logo  
MTIL
MIIL
I C
  12x2nd   FSC logo  
MTIL
MI2L
I C
  12x2nd   FSC logo  
MTIL
MI3L
I C
  12x2nd   FSC logo  
MTIL
MI4L
I C
  12x1st Gold   No Imprint Narrow side tab  
MTIL
MAIL
I
  12x1st Gold   No Imprint Wide side tab  
MTIL
MAIL
I
  12x1st Gold   No Imprint Wide side tab  
MTIL
MAIO
I A
  12x1st Gold   No Imprint Wide side tab  
MTIL
MIIL
I C
  12x1st Gold   FSC logo  
MTIL
MIIL
I C
  12x1st Gold   FSC logo  
MTIL
MI2L
I C
  12x1st RM Red   FSC logo  
MTIL
MI2L
I C
  12x1st RM Red   FSC logo  
MTIL
MI3L
I C
  12x1st RM Red   FSC logo  
MTIL
MI4L
I C
  100x2nd Bus. Sheet reprint De La Rue
MBIL
MAIO
I A
  100x1st Gold      
MBIL
MAIO
I A
  100x2nd Bus. Sheet reprint De La Rue
MBIL
MIIL
I C
  100x1st Gold      
MBIL
MIIL
I C
  100x2nd Bus. Sheet FSC logo C023216 Walsall
MBIL
MI2L
I C
  100x1st
RM Red
  FSC logo C023216  
MBIL
MI2L
I C
  100x2nd Bus. Sheet   Walsall
MBIL
MI3L
I C
  100x1st
RM Red
     
MBIL
MI3L
I C
  100x2nd Bus. Sheet   Walsall
MBIL
MI4L
I C
  100x1st
RM Red
     
MBIL
MI4L
I C
  Mixed
- 2x50p
Prestige King George V Walsall
MPIL
MAIO
I A
  - 2x2nd      
MPIL
MAIO
I A
  - 4x1st Gold      
MPIL
MAIO
I A
  Mixed
- 2x5p
Prestige Morris Walsall
none
none
n/a
  - 2x10p      
none
none
n/a
  - 2x50p      
MPIL
MIIL
I C
  Setenant
- 2x1st Gold
Prestige Aerial Post *1 Cartor
~ [Litho]
MPIL
MIIL
I C
  - 4x5p      
none
none
n/a
  - 2x76p      
MPIL
MIIL
I C
  *1 Normal Gum
  Setenant
- 4x68p
Prestige Roald Dahl *2 Walsall
MPIL
MIIL
I C
  - 2x10p      
none
none
n/a
  - 2x2p      
none
none
n/a
  *2 Normal Gum
  Setenant
- 5p
Prestige Dr Who*3 Cartor
~ [Litho]
MPIL
MI2L
I C
  - 10p      
MPIL
MI2L
I C
  - 20p      
MPIL
MI2L
I C
  - 87p      
MPIL
MI2L
I C
  *3 Normal Gum
  Setenant
- 1p
Prestige Football*4 Cartor
~ [Litho]
MPIL
MI3L
I C
  - 2p      
MPIL
MI3L
I C
  - 5p      
MPIL
MI3L
I C
  - 10p      
MPIL
MI3L
I C
  - 1st RM Red      
MPIL
MI3L
I C
  *4 Normal Gum
  Setenant
- 5p
Prestige Merchant Navy*5 Enschedé
~ [Litho]
MPIL
MI3L
I C
  - 50p      
MPIL
MI3L
I C
  *5 Normal Gum; Ellipse perf set near top of vertical sides
  Setenant
- 2p
Prestige Classic Locos*6 Enschedé
~ [Litho]
MPIL
MI3L
I C
  - 5p      
MPIL
MI3L
I C
  *6 Normal Gum
  Setenant
- 10p
Prestige Buckingham Palace *7 Enschedé
~ [Litho]
MPIL
MI4L
I C
  - 20p      
MPIL
MI4L
I C
  - £1      
MPIL
MI4L
I C
  *7 Normal Gum
  Setenant
- 10p
Prestige Great War *8 Enschedé
~ [Litho]
MPIL
MI4L
I C
  - 20p      
MPIL
MI4L
I C
  - £1      
MPIL
MI4L
I C
  *8 Normal Gum
  500x2nd Coils Vending Rolls *9 De La Rue
MRIL
MAIO
I A
  1000x2nd      
MRIL
MAIO
I A
  500x1st Gold      
MRIL
MAIO
I A
  1000x1st Gold      
MRIL
MAIO
I A
  *9 Normal Gum
  10,000x2nd Coils Large User Rolls De La Rue
MRIL
MAIO
I A
  10,000x1st Gold      
MRIL
MAIO
I A
  10,000x2nd Coils Large User Rolls Enschedé
MRIL
MAI2
 
  10,000x2nd     Walsall
MRIL
MI2L
 
  10,000x1st Gold     Enschedé
MRIL
MAI2
 
  10,000x1st
RM Red
    Enschedé
MRIL
MAI2
 
  10,000x1st
RM Red
    Walsall
MRIL
MI3L
 
  10x1st Gold Minisheet Machin Birth Centenary *8 Walsall
MMIL
AMII
I C
  *8 Normal Gum
Custom Booklets
  Value Source Edition
Printer
Source Letter
Year Code
Setting
6x1st Gold Booklets Olympic 2;
Mammals;
Olympic 3;
Spitfire ;
Olympic 4
Walsall
MCIL
MAIO
I A
  6x1st Gold   Thunderbirds;
British Heart;
Thomas the Tank;
Olympic 5;
Classic Locos - England;
Olympic 6
Walsall
MCIL
MIIL
I C
  6x1st
RM Red
  London Underground
Walsall
MCIL
MI2L
I C
  6x1st
RM Red
  Football Heroes I;
Classic Locos - N. Ireland;
Butterflies;
Royal Mail Transport;
Football Heroes II
Walsall
MCIL
MI3L
I C
  6x1st
RM Red
  Buckingham Palace;
Commonwealth Games
Walsall
MCIL
MI4L
I C

2010
2011
Type B
Type IV
Type D
Type V
Large NVI Sheets, Booklets and Business Sheets
  Value Source Edition Printer
Source Letter
Year Code
Setting
  2nd Large Sheet n/a De La Rue
MAIL
MAIO
B
  1st Large Gold      
MAIL
MAIO
B
  1st Large RSF      
MAIL
MAIO
B
  2nd Large Sheet n/a De La Rue
MAIL
MAII
  1st Large Gold      
MAIL
MAII
  2nd Large Sheet n/a De La Rue
MAIL
MAI2
  1st Large
RM Red
     
MAIL
MAI2
  2nd Large Sheet n/a De La Rue
MAIL
MAI3
  1st Large
RM Red
     
MAIL
MAI3
  1st Large RMSF      
MAIL
MAI3
 
  2nd Large Sheet n/a De La Rue
MAIL
MI4L
 
  1st Large
RM Red
     
MAIL
MI4L
4x2nd Large Booklets reprint Walsall
MFIL
MAIO
IV B
  4x2nd Large   No Imprint  
MFIL
MAII
V D
  4x2nd Large   FSC logo C023216  
MFIL
MAII
V D
  4x2nd Large   FSC logo; reprint  
MFIL
MAI2
 
  4x2nd Large   FSC logo; reprint  
MFIL
MAI3
 
  4x2nd Large   FSC logo; STD 0345  
MFIL
MAI4
 
  4x1st Large Gold   reprint  
MFIL
MAIO
IV B
  4x1st Large Gold   No Imprint  
MFIL
MAII
V D
  4x1st Large Gold   FSC logo C023216  
MFIL
MAII
V D
  4x1st Large
RM Red
  FSC logo C023216  
MFIL
MAI2
V D
  4x1st Large
RM Red
  FSC logo C023216  
MFIL
MAI3
V D
  4x1st Large
RM Red
  FSC logo; STD 0345  
MFIL
MAI4
  50x2nd Large Bus. Sheet reprint De La Rue
MBIL
MAIO
IV B
  50x1st Large Gold      
MBIL
MAIO
IV B
  50x2nd Large Bus. Sheet reprint De La Rue
MBIL
MAII
V D
  50x1st Large Gold      
MBIL
MAII
V D
  50x2nd Large Bus. Sheet FSC logo C023216 Walsall
MBIL
MAI2
V D
  50x1st Large
RM Red
     
MBIL
MAI2
V D
  50x2nd Large Bus. Sheet FSC logo C023216 Walsall
MBIL
MAI3
V D
  50x1st Large
RM Red
     
MBIL
MAI3
V D
  50x2nd Large Bus. Sheet FSC logo C023216 Walsall
MBIL
MAI4
 
  50x1st Large
RM Red
     
MBIL
MAI4
 


Queens Diamond Jubilee (2012)

To mark the Queens Jubilee a new 1st Class NVI colour was introduced - this replacing the 'Gold' colour. The colour is called 'Diamond Blue' and is similar to the colour used for the £5. In conjunction with this a new iridescent overprint was introduced with the text 'DIAMOND JUBILEE'. The same Hidden Source Code letters are used but there are no Year Codes.

DiamTnd
Diamond Jubilee printings
Diamond Jubilee 1st Class NVI ex Sheets, Booklets and Business Sheets printed in Diamond Blue
  Value Source Edition Printer
Source Letter
Year Code
Setting
All are in the colour : Diamond Blue
  1st Sheet   De La Rue
MOND
n/a
 
  1st Large Sheet    
ILEE
n/a
 
               
  6x1st Booklets Diamond Jubilee; Walsall
MCND
n/a
 
      Classic Locos - Scotland  
MCND
   
  6x1st Booklets FSC logo Walsall
MSND
n/a
 
  12x1st Booklets FSC logo Walsall
MTND
n/a
 
  4x1st Large Booklets FSC logo Walsall
ILFE
n/a
 
               
  100x1st Bus. Sheet FSC logo C020244 De La Rue
MBND
n/a
 
  100x1st Bus. Sheet FSC logo C023216 Walsall
MBND
n/a
 
  50x1st Large Bus. Sheet FSC logo C023216 Walsall
ILBE
n/a
 
               
  Setenant
- 4x1st
Prestige Diamond Jubilee *1 Walsall
MPND
n/a
 
  - 4x1st Wilding            
               
  Setenant
- 6x1st
Minisheet Diamond Jubilee *1 Walsall
MMND
n/a
 
  *1 Normal Gum
  Hidden Source Code occurs for the letter 'O' of DIAMOND or
in the case of Large NVI 's the first 'E' of JUBILEE.

Pick up a Hidden Code Summary - Click here



 
© Delta Stamps 2009