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CREAM Vs WHITE

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Fred Sellars28/07/2019 18:07:21
135 forum posts
46 photos

I have just recently heard that Arthur Ryan of Richmond in Surrey who has been in the stamp trade for 52 years is closing down due to ill health.

I have had quite a lot of bargains from him in the past so I wish him better health and good luck for the future.

Fred Sellars03/08/2019 11:41:07
135 forum posts
46 photos

img_20190803_111128.jpgAccording to catalogues the 1/3d violet phosphor on cream paper does not exist !

It exists in this picture !

Top photo under UV: bottom photo under UV then filtered into mono.img_20190803_111613.jpg

Fred Sellars08/08/2019 14:21:40
135 forum posts
46 photos

img_20190808_113725.jpgIt would seem that some of the cream papers that are fine to very fine used command a premium over the whiter paper varieties and are valued at the same price as the unmounted mint ones, unlike the whiter cousins.

I know of a retailer based in Newbury that specialises in these stamps and is retailing them at quite a large difference between the cream and the whites ie.

The 10d plain vfu on cream paper = £15 each : on whiter paper 45p each.

The 1/6d plain vfu on cream paper = £11 each : on whiter paper 25p each

So being able to differentiate goes without saying !

It is quite possible that you have some of them in your own collection and all you need is a long wave ultraviolet lamp to find them.

The two pictures should help you to recognise the difference .

Good hunting, Fred.img_20190808_113258.jpg

Fred Sellars09/08/2019 18:49:12
135 forum posts
46 photos

The 3 amigos.

Fred Sellars19/08/2019 09:26:01
135 forum posts
46 photos

img_20190818_210528.jpgIsn't it surprising, when you start looking for something specific in philately you tend to find it, once you have found a particular example such as cream type papers issued long after the 1962 period of change over.

It would appear that in some cases optical brightening agents were omitted during the production of some of the papers used for the multiple crown watermark long after the change over date.

Here is another example for comparison, showing the difference between the two types of paper produced around 1966 of the 3d violet phosphor centre band .

img_20190818_211025.jpg

Fred Sellars22/08/2019 13:46:48
135 forum posts
46 photos

In my study of papers to start with, one must look for a common thread appertaining to cream and whiter type papers found from many different countries issuing these stamps with these variances, and that main factor is the inclusion of optical brightening agents (OBA's) when the paper was first produced and another thing is to why it was introduced in the first place .

In the late 1950s automatic sorting of postal items was still in its infancy and various experiments were carried out with the introduction of graphite lines on the reverse of some of the lower value definitives, apparently they were not very successful and in 1958 stamps with phosphor bands and phosphor coating were experimented with in what is known as the " Dollis Hill trials " using yellow and green type reacting phosphors on the front of the stamps using 2d and 3d values, and for one reason or another the green phosphor was selected .

Eventually, the graphite lines were discarded and phosphor stamps were introduced .

All this was done so that letters could be sorted automatically via machine rather than by hand .

It was then decided in 1962 to add OBA's into the production of papers either in the wet stage when the paper was just pulp or at a later stage when a coating could be applied to the surface of the paper as a cost saving method .

In my opinion this was done to enhance the proficiency of the automatic sorting machines used at that time,and the use of whiter papers was proclaimed by the post office stating that only whiter papers would be used from 1962 onwards .

However, it would seem that many values issued since 1962 have been found printed on a cream type paper, leading to the fact that optical brightening agents were omitted when the paper was initially produced .

The above relates to British stamps but the overall picture could also apply to other countries that have issued stamps with OBA's incorporated into the paper .

You can view some information on the " Dollis Hill trials " on YouTube under stamp collecting via Mark Bloxham stamps ltd.

 

Edited By Fred Sellars on 22/08/2019 14:02:49

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