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Ultra violet radiation of multiple crown Wilding definitives.

Cream and whiter papers.

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Fred Sellars02/05/2020 11:01:02
419 forum posts
165 photos

Still on the theme of stamp collectors and their contributions towards the hobby in the past, I have this to say.

In all my years of stamp collecting (60+) I have never known British stamp papers to have been so contaminated before (or since), normally unseen by the naked eye but very prominent under the relevant ultraviolet light, similar to phosphor band tagging and their variations.

The fact that the FIB's discovered are so different beggars belief as to why there has never been any previous write-ups in any magazines or other philatelic publications in the past, does nobody do any research or study on Wilding stamps anymore ? Or do they just follow the herd ! Added to the fact that these stamps have been in the hands of collectors now for over 50 years.

Much has been written on the subject of Machins to the point of exhaustion (which is commendable), but their predecessors have been treated as a Cinderella.

How can stamps with such an identifiable difference be ignored !img_20200404_133649.jpg

Fred Sellars02/06/2020 10:02:46
419 forum posts
165 photos

Although there is a slight duplication on some of my scans between in this thread and the CREAM Vs WHITE one recently updated, I feel that this posting should join its partner to be read in conjunction on the subject of stamp papers that appears to have been neglected for so many years, thank you, Fred.

Fred Sellars27/06/2020 14:26:11
419 forum posts
165 photos

To discover a stamp that is not listed in a specialised catalogue can be quite a thrill and this seems to be the case with several of my findings over the last few months, and all due to a longwave ultraviolet light used. This next find also gives credence to that fact.

The majority of experienced philatelists will already be aware that the non-watermarked papers of the late 60s and early 70s registered a high fluorescence when subjected to a long wave ultraviolet light due to the type of paper used, classified as being coated by catalogues, but it would also appear that some of the watermarked stamps of the late 60s period have similar attributes but have been side-stepped (for want of a better word) by catalogues.

This next discovery involves the 3d plain originally issued for Wales on the 18th of August 1958 originally printed on a cream paper, later being changed to a whiter one in 1962 attributed to the filtration of the water used to make the paper, followed by the centre violet phosphor band using a similar paper issued on the 16th of May 1967 concluding with the no watermarked coated paper on the 6th of December of the same year.

This find involves the 3d Welsh regional stamp (plain) printed on a highly fluorescent paper that reacts in a similar way to the no watermarked papers and could be easily mistaken for one of them, this is clearly not the case as this paper has a watermark embodied into its structure as can be seen in the scan below, followed by a scan of the same stamp as seen under longwave ultraviolet light alongside a cream paper to the left .

Very few specialists will have obtained this stamp in their collection, so keep an eye open when visiting stamp fairs or stamp shops that you frequent for this little gem !


Edited By Fred Sellars on 27/06/2020 14:29:30

Fred Sellars17/08/2020 20:12:35
419 forum posts
165 photos

Still on the theme of regionals one of my latest finds has been the 1/3d Northern Ireland stamps none of which ever had phosphor bands applied throughout their lifespan. By using the long wave ultraviolet lamp I have been able to discover three variations of paper used to print them, the specialised catalogue lists only two varieties, cream and whiter papers only, but it would appear that I have discovered a third variety being on fluorescent paper as with the 3d Welsh one previously shown in my last scan.


As to why this type of paper was produced is fairly obvious (to mask or camouflage the offending contaminants) by deliberately adding additional optical brightening agents during the pulp stage to do so, but this was never disclosed by the GPO and has consequently never been listed by the specialised catalogue.

Of the quantities sold that is stated in the specialised catalogue of both cream and white papers up to the 31st of march 1968 is 14,060,520, but how many fluorescent stamps was included in this total ?

Do you have any of this particular variety in your collection ? I doubt that this is the case but worth checking out ! Fred.

Fred Sellars18/10/2020 12:00:57
419 forum posts
165 photos

It would seem that with the use of long wave ultraviolet I can now disclose to you of finding 4 different types of paper that was used to produce the 3d (plain) regional for Wales, initially, I thought that there was only 3 but on further examination I discovered that this was not the case

In my first attachment taken from the printed side you will notice that stamps 3 and 4 appear to be identical in emitting luminescence (fluorescence) on being radiated due to additional optical brightening agent being added.


But my second attachment view from the reverse (gummed side) using the same stamps, show that there is a marked difference, culminating into the fact that there are four distinct papers that can be identified in the production of this particular stamp.


Therefore, previous findings of this particular stamp need to be amended accordingly. Fred.

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