20 October 2016 - 1st class deep scarlet Machin definitive from new retail booklet of 12, in new colour.
Year code M16L, source code MTIL, booklet has new font for text.
SG number U2968ea - new number for new shade.
Booklets also available - see MF9.
§ Please note we have changed the number from 2936.6a to 2936a.6 - the basic stamp is a new colour and therefore has the suffix 'a' (2937 is already in use).