27 March 2003 - Worldwide 40g Airmail booklet stamp - The Real Network
Booklet of 4 stamps, and 4 airmail labels, printed by Walsall SP, cylinder W1 W1
As these stamps are now valid for 100g the current postage value of the booklet (March 2016) is £9.
SG Catalogue number MJ1
In these booklets the phosphor was continuous between stamps, so phosphor shifts upwards or downwards resulted in only 2 stamps having short phosphor bands. (In the later 20g booklets the phosphor was intended to be on the stamps only, so shifts resulted in 4 stamps with short bands.)
MJ1 - Normal phosphor - non-cylinder or cylinder
MJ1a - phosphor 1mm short at foot - non-cylinder or cylinder
MJ1B - phosphor 2.5mm short at foot - non-cylinder only