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Fred Sellars23/02/2021 13:25:46
598 forum posts
264 photos

Another regional that has a differential between cream and white papers is that of the 4d plain for Northern Ireland, issued on the 7th of February 1966, being later superseded by the two violet 9½mm phosphor banded variety on 2nd of October 1967.


Although there is quite a notable difference when seen under long wave ultraviolet light with the naked eye, it is sometimes hard to capture as a digital image. Fred.

Fred Sellars26/02/2021 09:21:43
598 forum posts
264 photos

The 4d deep ultramarine is one of the more common stamps to be found in the Wilding series, this particular shade was first issued 28⁴/65 replacing the lighter ultramarine shade.

Although it is common, this stamp holds many surprises regarding the various papers used to print it, ranging from the original plain to the final 9½mm violet phosphor issued in early 1967 which also includes watermark variations. This stamp has been designated to have been printed on a whiter paper only by the specialised pre-decimal catalogue, but because of a problem encountered in the production of these papers concerning contaminants, other varieties of paper have been discovered.

Such is the case with the 8mm 2 band phosphor originally issued on 13⁸/65, as it can be found to have been printed on a cream paper (see attachment below).........


After seeing the difference one can hardly state that the papers are identical as portrayed/stated in the specialised catalogue, as this is obviously not the case, the same applies to many other values found where only the whiter papers have been discriminated. Fred.

Fred Sellars27/02/2021 12:04:36
598 forum posts
264 photos

Here are further examples of the 4d value showing complete booklet panes of the 9½mm phosphor, each printed on two distinct types of paper.


Under long wave ultraviolet light it would also seem that two to different inks have been used, with a much darker shade being attributed to the cream paper ones. Fred.

Fred Sellars03/03/2021 15:59:31
598 forum posts
264 photos

The majority of attachments based on this topic have mainly been displayed relating to the differences found between cream and whiter papers, so for a change here are two attachments based on comparison rather than difference, using a 6d plain stamp cancelled in 1960 as against some 9d phosphors first issued on 29¹²/66 ...........



The two values appear to be virtually identical as far as the colour of the paper is concerned !

Compounding the fact that cream papers have been used to print British stamps long after 1962.


Fred Sellars07/03/2021 12:01:53
598 forum posts
264 photos


The 6d plain stamp (cancelled in 1960) was printed on a cream paper, whereby the 9d phosphors was printed on an oxidized cream paper, with the only difference being that the original creams (printed prior to 1962) are to be found on a paper that is more opaque as against the paper used to print stamps (post 1962) that tend to be more translucent.

Nevertheless, the colour of the paper is the same when comparing them side by side under long wave ultraviolet light.


Fred Sellars09/03/2021 11:16:05
598 forum posts
264 photos

On inspecting many of these 9d phosphor stamps, l discovered that they can be found on two distinct types of paper from which they were printed.

I was unable to find any contaminated nor fluorescent papers with these 9d's and discovered that the oxidised cream variation to be much more prolific than the whiter paper variety being the one currently listed in the specialised catalogue, making the whiter paper more elusive than the oxidized cream paper version.

Here are two attachments depicting both the cream and whiter papers to be found as seen under long wave ultraviolet light.



Good hunting ! I hope you find some of those more elusive papers. Fred.

Fred Sellars12/03/2021 12:29:29
598 forum posts
264 photos

The reason for the production of the post 1962 oxidised cream and fluorescent papers was instigated due to the fact that contaminants had been discovered in the some of the stamp papers produced from around 1964.


Two methods was implemented in order to alleviate the problem encountered, one procedure used was the use of a chemical oxidation process to remove them, the other method being the addition of optical brightening agents in which to obscure them, but in doing so two new types of paper was created, giving a total of 3 unlisted papers in the specialised catalogues.

Contaminated, oxidised creams and fluorescent papers, all of which can be found in this topic of "CREAM Vs WHITE". Fred.

Edited By Fred Sellars on 12/03/2021 12:41:47

Fred Sellars27/03/2021 09:15:28
598 forum posts
264 photos

The oxidised cream and fluorescent papers of the 4d value : Contaminated problem solved ?


By solving one problem they created two additional types of paper that are not listed. Fred.

Fred Sellars23/04/2021 08:36:44
598 forum posts
264 photos

Based on various findings, it's quite possible that some collectors who have purchased the cream paper versions may have inadvertently been sold an oxidized cream one by mistake, as the majority of the original cream papers are more opaque and not as translucent as the oxidized papers from the printings from around 1964 onwards.

Nevertheless, the oxidized cream papers in some instances could be much scarcer than some of the original cream ones. Fred.

Fred Sellars01/05/2021 16:44:02
598 forum posts
264 photos

I have come across another commemorative that appears to have been printed on two different types of paper as can be seen of the 1970 5d (one of the last 3 pre-decimal Christmas stamps to be issued).


Although in used condition, the difference is quite striking when comparing the two types of paper used to print this stamp on its 51st anniversary. Fred.

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