20 October 2016 - 12 x 2nd class blue booklet with source code MTIL
Cylinder numbers: W6 (blue), W1 (iridescent) W3 (phosphor) - the numbers are hidden by the front cover of the booklet.
A new printing was made on in 2017
(packing date 03/04/17) on SBP2 with year code M17L
Small number of Cylinder booklets available.
Printed by Walsall Security Printers. SG GB Concise catalogue - new number expected to be ME7a