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Europe/Great Britain : GB SG48/49;S58, Plate #'s different on same stamp?

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david13617
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07 Jan 2016
05:54:29pm
In looking at the stamp below it appears that the RH side plate number is 12, while the left hand side number is 13.Image Not Found
The following 2 photos are zooms of the plate numbers.Image Not Found
Image Not Found
But perhaps my old eyes are deceiving me. The 12 sure looks like a 12 and the 13 looks like it has a 3 in it.
I did not see any mention of this type of error in an SG concise or Scotts and a limited internet search didn't come up with anything. Any thoughts or information on this one would be appreciated. Thanks,
David
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nigelc
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07 Jan 2016
07:21:35pm
re: GB SG48/49;S58, Plate #'s different on same stamp?

Hi David,

This is quite striking on first sight; however, looking at it more carefully, I believe the lower image with an apparent "13" has a "12" with part of the "2" obscured by dirt so that the eye sees a "13" instead, subconsciously including part of the background as the cross stroke of a three.

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lisagrant87
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It is during our darkest moments that we must focus to see the light. - Aristotle Onassis
07 Jan 2016
07:47:57pm
re: GB SG48/49;S58, Plate #'s different on same stamp?

They're definitely both 12's.

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Ningpo
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07 Jan 2016
07:57:26pm
re: GB SG48/49;S58, Plate #'s different on same stamp?

Image Not Found

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amsd
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Editor, Seal News; contributor, JuicyHeads
08 Jan 2016
08:56:35am
re: GB SG48/49;S58, Plate #'s different on same stamp?

i see nothing but 12s

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david13617
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08 Jan 2016
10:00:08am
re: GB SG48/49;S58, Plate #'s different on same stamp?

Thank you for all your input. I can sort of see a 2 with a little imagination, but that cross stroke really is deceiving. Ningpo, what is the green scan you provided? Is it from reveal.org?
David

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Ningpo
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08 Jan 2016
11:24:59am
re: GB SG48/49;S58, Plate #'s different on same stamp?

The 'green scan' is an over-layed, cut and paste section, with negative colours just for comparison. I used PhotoFiltre 7.

I tried numerous tweaks, such as changing colour channels, hue, saturation etc. This was to no effect. I also put this through Retroreveal; again nothing was 'revealed'.

However, using the negative image, I used those parts that show as whitish, to plot a possible line. This is what I came up with:


Image Not Found


But this is not at all conclusive, as it is too easy to manipulate what is little more than guesswork. And remember, these whitish parts are non-white on the positive image.

I think there are three factors that may have influenced the numeral looking like a 3:

Firstly; smudging of the ink used to cancel the stamp at the base of the numeral. Secondly; over-inking (spreading) of the red during printing and thirdly, imprecise engraving of the numeral, with the possibility that the engraver made a slight slip giving the impression of a middle bar of a '3'.

There is also the possibility that the apparent middle bar was actually present (as part of the design) before the plate number was engraved; notice the middle bar extends to the right of the numeral.

I hope you can make sense of this!

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