Put all the stamps face up under the U.V. lamp and
sort into four sections.
Section 1: The stamps are
very dull pink colour and are difficult to see until your
eyes are used to the lamp. These are non-fluorescent and
non-phosphor or untreated paper.
Section 2: The Stamps are
a greyish colour, definitely whiter that section 1, but
may easily be mixed up with section 4. However, when placed
side by side, the white border of the perforation is bright
clean white in section 4 as opposed to a dull greyish colour
in section 2.
Section 3: All stamps have
a bright yellow border around the sides. Thickness differs
and centring is often bad
A very bright white, but sometimes tending towards blue
or yellow and the brightness and colour do vary a lot, however
they are a lot brighter than section 2.
The stamps like ½c, 1c, 3c, 4c, 6c and 15c are easy
to distinguish - but with the 2c, 5c, 9c, 10c and 20c one
must concentrate on the white surround and not the inside
of the stamps.
Take section 3, those with the bright yellow border and
turn them all up-side-down and put under the U.V. lamp:
a) Those with
a grey or fluorescent back are Group
VII (Harrison paper)
b) Those with
a dull pink non-fluorescent back are Group
VI (Swiss paper)
Take Section 2 those with a fluorescent grey front, turn
them all up-side-down and sort into two piles.
a) Pink non-fluorescent
back are Group V
b) Grey fluorescent
back are either Group
III or IV
- See step 4
Take those from pile b) Above (Step 3, Section b) and face
them all upright and sort out into original design and redrawn
Most values are automatic i.e. 1½c, 5c, 7½c,
10c and 20c must be original design, while ½c, 2c,
12½c and 15c are all redrawn design