27. Machin (E) £1- -£5

Y1743

• 1996.100.01 has a White Back.
• The Enschedé issues have 9.5mm phosphor bands; the DLR Phosphor bands are 9mm.
• SG Specialised does not recognise any difference between 1995.100.01 and 1996.100.02 except in a footnote.
• 1996.100.02 is known as the "yellow head" as it fluoresces yellow due to using a deeper colour ink. It is a shade paler compared with 1996.100.01.
• It may be difficult to tell the difference between singles of 2003.100.01 and 2004.100.01.
• 2003.100.01 through 2004.100.01 has bluish gum whereas 2005.100.01 is creamy. Cylinder D2 is only found with cream gum.
• SG specialised doesn't recognise it as such but 2007.100.01 is only available from the "40th Anniversary Machin" Miniature Sheet. It is a different stamp as it is "sideways printed" with the sheet versions being "upright printed".

MS2146

• All the "MS" OFPP (PCP) stamps issued in 2000 are from the "Jeffrey Matthew's Stamp Show" Miniature Sheet. SG does not allocate separate "Y" series numbers for these.

Y1744

• SG specialised doesn't recognise it as such but 2007.100.03 is only available from the "40th Anniversary Machin" MS (DMS20). It is a different stamp as it has a darker head and is "sideways right printed" as against the sheet versions being "upright printed".
• 2007.100.04 originates from the Machin Prestige Book (DX39) is also printed sideways right but can be distinguished as it has a paler head than 2007.100.03.

U2912

• 2009.100.01 is self-adhesive with security slits from a sheet and has NO date code or source code.

U2931

• 2011.100.01 is self-adhesive with security slits from a sheet and has date code M11L.
• 2012.100.01 is as above but with date code M12L.
• no ruby stamps were issued in 2010 or after 2012.

U2932

• 2013.100.01 is self-adhesive from sheets with security slits with date code M12L. M13L doesn't exist.
• 2014.100.01 is as above but with date code M14L.
• 2015.100.01 is as above but with date code M15L.

U3021

• 2014.100.02 is water activated (gummed) with source and date code.
  Only from DP471 (DY10 - Prestige Book - Buckingham Palace).
• 2014.100.03 as above. Only from DP475 (DY11 - Prestige Book - The Great War 1914).
• 2015.100.02 as above. Only from DP488 (DY14 - Prestige Book - The Battle of Waterloo).

U2933

• 2011.110.01 is self-adhesive from sheets with security slits with date code M11L.
• 2011.110.02 as above but is a COIL version of the above (with Sideways Right printing) but it is generally only found on official Royal Mail FDC's i.e. only in USED format.
• 2012.110.01 self-adhesive with date code M12L. There was no general distribution of this value. The stamp is very scarce and it is not recognised by SG.

U2934

• 2012.128.01 is self-adhesive from sheets with security slits and date code M12L.
• 2012.128.02 as above but is a COIL version of the above (with Sideways Right printing) but it is generally only found on official Royal Mail FDC's i.e. only in USED format.
• 2013.128.01 is self-adhesive with date code M13L.
• 2014.128.01 is as above but with date code M14L.

U2934a

• 2015.133.01 is self-adhesive from sheets with security slits and date code M15L.

U tba

• 2015.133.02 is water activated (gummed) with source and date code.
  Only from DP484 (DY13 - Prestige Book - The Great War 1915).

Y1725c

MS3073

• 2010.146.02 originates from the London 2010 Miniature Sheet.

U2934a

• 2014.147.01 is from self-adhesive sheets with security slits and M14L in the overprint.

Y1800

• 1999.150.01 fluoresces a bright green-gold.
• 2000.150.01 fluoresces brown.

Y1726

• Although this issue is from the "Byfleet" series it is only known on Intermediate paper (TRI).

U2913

• 2009.150.01 is self-adhesive with security slits.

U2921

• 2011.165.01 no source code. Date M11L. T2a cuts.
• 2012.165.01 no source code. Date M12L.

U2936

• 2013.188.01 Sheet stamp. Date M13L. Emergency printing by Walsall
• 2013.188.02 Sheet stamp. Date MA13. Regular printing by DLR.

U2937

• 2012.190.01 is from self-adhesive sheets with security slits and M12L in the overprint

Y1801

• 1999.200.01 fluoresces a light green.
• 2000.200.01 fluoresces emerald green.

Y1727

• There were two cylinder blocks issued (D1 - issued in 2003 and D2 - issued in 2005) they have different characteristics in paper brightness.

Y1727a

• The "£ sign omitted" variety is the most dramatic error in the Machin series. It only occurs in R. 18/1 on the D1 No Dot cylinder. Only known on dull paper.

U2914

• 2009.200.01 is self-adhesive with security slits.
• 2013.200.01 has "MA13" added to the security under-print.

U2939

• 2014.215.01 is from self-adhesive sheets with security slits and M14L in the overprint.

Y1802

• 1999.300.01 fluoresces a mid-green.
• 2000.300.01 fluoresces grey-green.

Y1728

• 2006.300.01 is only available from the "Three Kings" Miniature sheet. This is printed on RMS paper and has White Gum as against Tinted Gum on 2003.300.01.

U2915

• 2009.300.01 is self-adhesive with security slits.

Y1803

• 1999.500.01 fluoresces a yellow-green.
• 2000.500.01 fluoresces dark green.

Y1729

U2916

• 2009.500.01 is self-adhesive with security slits.