3 January 2013 - 1st class red Machin definitive from counter sheets source code MAIL. The 2013 reprint, coded MA13, appeared at Autumn Stampex on 18th September.
As with all spring 2013 De La Rue printings there is no sheet number and no printing date on these sheets.
Choose any number of single stamps,
or Cylinder block of 6
or [No-]Date block of 8
or block dated 07/11/13
or Gutter pair
SG number U2958a (also used for M12L coded stamps.)