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What we collect!
What we collect!


General Philatelic/Identify This? : US air mail

 

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foudutimbre
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19 Mar 2019
05:41:51pm

Auctions - Approvals
According my Yvert catalogue there is only one color for this stamps orange color
I found in a lot I purchased one with light brown color

Image Not Found


Is this a color variety ?

Thanks in advance


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musicman
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APS #213005

19 Mar 2019
06:46:48pm
re: US air mail

Probably chemically altered or sun faded.

You are correct - these were issued in only one color; orange.

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51Studebaker
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Dialysis, damned if you do...dead if you don't

19 Mar 2019
07:47:49pm
re: US air mail

You can change this stamp back to its original color.
http://stampsmarter.com/learning/HowToRemoveOxidation.html

Don

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"Current Score... Don 1 - Cancer 0"

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larsdog
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APS #220693 ATA#57179

19 Mar 2019
11:35:48pm
re: US air mail

Thanks for that link, Don!

Bill is sorely missed!

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"Expanding your knowledge faster than your collection can save you a few bucks."

www.larsdog.com/stamps
michael78651
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20 Mar 2019
01:57:50am
re: US air mail

Actually the orange color did not change to a darker hue due to oxidation. It is sulphurization that caused it. Using water peroxide will actually oxidize the pigment to return it to its original color.

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www.hipstamp.com/store/the-online-stamp-shop
foudutimbre
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20 Mar 2019
04:57:40pm

Auctions - Approvals
re: US air mail

Thanks a lot for these clarifications.
The link is much appreciated and through philately learn chimical and this brings me back several years back to the university benches where I prepared some quick fixes.

Abderrahmane



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Author/Postings
Members Picture
foudutimbre

19 Mar 2019
05:41:51pm

Auctions - Approvals

According my Yvert catalogue there is only one color for this stamps orange color
I found in a lot I purchased one with light brown color

Image Not Found


Is this a color variety ?

Thanks in advance


Like
Login to Like
this post
Members Picture
musicman

APS #213005
19 Mar 2019
06:46:48pm

re: US air mail

Probably chemically altered or sun faded.

You are correct - these were issued in only one color; orange.

Like
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this post
Members Picture
51Studebaker

Dialysis, damned if you do...dead if you don't
19 Mar 2019
07:47:49pm

re: US air mail

You can change this stamp back to its original color.
http://stampsmarter.com/learning/HowToRemoveOxidation.html

Don

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"Current Score... Don 1 - Cancer 0"

stampsmarter.org
Members Picture
larsdog

APS #220693 ATA#57179
19 Mar 2019
11:35:48pm

re: US air mail

Thanks for that link, Don!

Bill is sorely missed!

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this post

"Expanding your knowledge faster than your collection can save you a few bucks."

www.larsdog.com/stam ...
Members Picture
michael78651

20 Mar 2019
01:57:50am

re: US air mail

Actually the orange color did not change to a darker hue due to oxidation. It is sulphurization that caused it. Using water peroxide will actually oxidize the pigment to return it to its original color.

Like
Login to Like
this post

www.hipstamp.com/sto ...
Members Picture
foudutimbre

20 Mar 2019
04:57:40pm

Auctions - Approvals

re: US air mail

Thanks a lot for these clarifications.
The link is much appreciated and through philately learn chimical and this brings me back several years back to the university benches where I prepared some quick fixes.

Abderrahmane



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this post
        

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