Printing Inks Used On The 1967-1973 Centennial Issue - Part Six of Eight
5c Blue - Atlantic Fishing Village
The vast majority of the printings of this stamp are in a transformative ink that comes very close to being black under UV, while a smaller portion of the stamps are printed in non-transformative inks that either do not appear significantly different under the lamp, or they merely appear deeper, without losing the essential character of their original colour.
Let us start off with five stamps that are all printed in various shades of deep blue:
Under the UV lamp, those same five stamps look like this:
The non-transformative inks seem to occur mainly on the PVA gum stamps, which is the opposite of what we typically find on the other values, and on most of the booklet stamps and some of the coils.
Now, let's take a look at seven more stamps:
With the exception of the coil stamps, all of the 6c orange stamps were printed by the BABN. The inks are always transformative, with one exception: the commonly known fluorescent ink printings.
Non-Transformative Fluorescent Ink
Let's start off looking at an example of the fluorescent orange ink, from one of the 25c booklet panes:
Now, let's take a look at it under UV:
Now, let't take a look at eight stamps commonly found of this value:
Lets now take a look at the stamps under UV light:
6c Black - Transportation
As one might expect, due to the nature of the colour, this is the only stamp from the series that I know of, that is printed entirely from non-transformative ink, which in nearly every instance appears almost identical under UV to how it appears in normal light.
Let's take a look at seven stamps, which comprise several of the BABN printings and the CBN coil:
Now, let's take a look at two of the CBN sheet stamps that were printed using the revised die:
Most collectors who have experience with this value notice after a while that there are two basic shades: a deep emerald green, and a myrtle green which is quite deep and dull. Those stamps printed in the deeper, duller shade, are printed in a non-transformative ink, while those printed in the deep emerald, tend to be printed in a transformative ink that tends to look black under UV.
Lets take a look now at five of the stamps printed in the deeper, duller myrtle green: