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Ultra violet radiation of multiple crown Wilding definitives.

Cream and whiter papers.

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Fred Sellars28/01/2021 14:12:38
590 forum posts
257 photos

There are so many different features that have been created regarding security on many of the Machin stamps, it's sometimes hard to keep up with them all Julian.

The elliptical perfs began to appear in 1992 with the gold head high values £1-£5 which can involve two different shapes (rugby ball & sausage) dependent on which printer was used to print the stamps especially with the smaller format ones.

The patterned lettering in the background and the self adhesive plus many more variations, all of which can be found in the Connoisseur catalogue by James Skinner at .........

But it's the different papers used to print the multiple crown Wildings of which is my concern Julian that appears to have been neglected in the past. Fred.

Fred Sellars24/03/2021 09:41:37
590 forum posts
257 photos

A previous attachment concerning a Machin stamp appeared to have been printed on a contaminated paper in a similar way to some of the Wilding stamps, which can only be observed with the use of a long wave ultraviolet light.

Here is a further trilogy concerning a specimen stamp that appears to have been printed on contaminated paper that I recently discovered, the stamps in question being 2 X 22p flame red PCP (AOP.) Giving three different views of the same stamps for comparison........



With the reversed view showing the contaminated paper ...........


One can only compare like with like in order to assess the differences. Fred.

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