3 January 2013 - 1st class Large red Machin definitive from counter sheets source code MAIL. The 2016 reprint, coded M16L, was first available in April 2016.
Options available (if your choice is out of stock please ask):
Singles or multiples
Cylinder blocks of 6
or Date block of 8 - 12/02/16
SG number - U2960a (also used for earlier printings)