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Security Machins (page updated: Jan 17/13) Machin with Security-type features (Security pattern lettering in background or semi-circular slits). Issue dates shown reflect the first release of that value. See the specialized lists for additional varieties. Click for detailed illustrations of security features. (jump to denomination/colour illustrations) Small size: 1p dark maroon (Mar 8/11) 2p dark green (Mar 8/11) 5p ash pink (red-brown) (Mar 8/11) 10p light tan (Mar 8/11) 20p light green (Mar 8/11) 50p light grey (Feb 17/09) 50p slate grey (Jan 3/13) 68p sea green (Mar 29/11) 76p bright pink (Mar 29/11) 87p orange (Apr 25/12) £1 ruby (Feb 17/09) £1 wood brown (Jan 3/13) £1.10 lime green (Mar 29/11) £1.50 terracota (Feb 17/09) £1.28 emerald (Apr 25/12) £1.65 sage green (Mar 29/11) £1.90 amethyst (Apr 25/12) £2 slate blue (Feb 17/09) £3 purple (Feb 17/09) £5 grey blue (Feb 17/09) 1st gold (Feb 17/09) 1st diamond blue (Feb 6/12) 1st Royal Mail red (Jan 3/13) 2nd light blue (Feb 17/09)   PIP: (Pricing in Proportion & 'Large') 1st gold (Feb 17/09) 1st diamond blue (Mar /12) 1st Royal Mail red (Jan 3/13) 2nd light blue (Feb 17/09)  Recorded Signed For: 1st flame and yellow (Nov 17/09) 1st large flame and yellow (Nov 17/09) Special Delivery: Up to 100g (silver, light and dark blue) (Oct 26/10) Up to 500g (light and dark blue, silver) (Oct 26/10) Denomination/colour illustrations: