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Scott 515 - Dare you to figure out this oddity.  
 

 
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Posted 04/21/2017   3:42 pm  Show Profile Bookmark this topic Add wert to your friends list  Get a Link to this Message
Hi guys...Tea look at this pair of Scott 515 stamps..


Look at the irregular colour on these stamps.



Look at the over colour associated with perfs.


And coloured perfs going vertically also.



Here is the gummed back of these stamps.



Now look when I overlap the front and back of the stamp.


This only leads me to one conclusion...My sheet of stamps was placed upside down a the time of placing gum after the back, correct side had already had gum applied...Does that make sense..??
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Posted 04/21/2017   3:51 pm  Show Profile Check 51studebaker's eBay Listings Bookmark this reply Add 51studebaker to your friends list  Get a Link to this Reply
I would guess that it is a victim of some bad storage/enviromental conditions.
Don
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Posted 04/21/2017   4:00 pm  Show Profile Bookmark this reply Add chasa to your friends list  Get a Link to this Reply
collected to near death and valuelessness
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Posted 04/21/2017   4:00 pm  Show Profile Bookmark this reply Add chipg to your friends list  Get a Link to this Reply
Is the dark area gum? or just discolored?

If it is just discolored, my guess would be that a few of them were stored in an envelope where the paper was somewhat acidic. The area that is not discolored was not in contact with the envelope paper. The block that overlayed this block would show that discoloration.
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Posted 04/21/2017   4:24 pm  Show Profile Bookmark this reply Add wert to your friends list  Get a Link to this Reply
Well, tried the lick test on the front of the stamp...Look at the colour of the front and the back..so, so close in colour...Used my colour grabber program as seen below.



Colour copy of front and back below


Bottom line of my "lick and stick" test...Stamp did not adhere...May be picking up colour from the gummed side from another sheet...Just turns out to be an oddity..Worthless, but a keeper as far as oddities go..Thanks for the replies guys.
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Posted 04/21/2017   4:27 pm  Show Profile Bookmark this reply Add bookbndrbob to your friends list  Get a Link to this Reply
Very strange effect. The shape of the discolored area mimics the shape of the 2 stamps and selvage, in most respects.
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Posted 04/21/2017   4:35 pm  Show Profile Bookmark this reply Add wert to your friends list  Get a Link to this Reply
Exactly bookbndrbob...That is why I did not think of discolouration as most people think...But, I guess I have to go with discolour...???

Robert
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Posted 04/21/2017   7:29 pm  Show Profile Bookmark this reply Add alub to your friends list  Get a Link to this Reply
The discoloration looks like it is from being stored next to some acidic paper. Another block/pair of stamps was between this set, and the acidic paper, and it too, turned brown. It is not reversible.
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Posted 04/22/2017   10:54 am  Show Profile Bookmark this reply Add sak to your friends list  Get a Link to this Reply
Left in the sun, I think.
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Posted 04/22/2017   3:32 pm  Show Profile Bookmark this reply Add bookbndrbob to your friends list  Get a Link to this Reply
I would guess that it is a storage problem rather than a sun/UV light effect. Sunlight degrades red and yellow printed colors badly, and the red printing doesn't seem to be affected.
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Posted 04/22/2017   3:52 pm  Show Profile Check 51studebaker's eBay Listings Bookmark this reply Add 51studebaker to your friends list  Get a Link to this Reply
I have seen stamps that toned like this when they were stored in a old cigar box (acidic environment).
Don
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Posted 04/22/2017   6:21 pm  Show Profile Bookmark this reply Add wert to your friends list  Get a Link to this Reply

Quote:
I have seen stamps that toned like this when they were stored in a old cigar box (acidic environment)


I cant remember where I got them Don, but a good possibility

Robert
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