20 October 2016 1st class Large deep scarlet Machin security definitive business sheet 2016, with Security Backing Paper.
This is a 1st class Large letter business sheet stamp coded M16L with new Chevin font and darker colour to both stamps and top panel.
SG U2973a - a new number for the new shade.
§ Please note we have changed the number of the deep scarlet stamps. With the red counter sheet stamp numbered 2916, because this was a new colour it (had it been issued in 2016) would have become 2916a (as 2917 is already in use). This stamp is therefore changed from 2916B.6a to 2916aB.6.