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Iran / Persia stamps gum problem

worldphila 100% (1744x)

360 messaggi

Israele
I have some Iranian full sets.
This one is an 1950 set.
The problem is the gum side. The gum has a dark color like stain.
I have thousands of mint stamps from other countries. Some are stained. But this is a different kind of stain.
Probably the problem was the kind of the gum? Have more iranian sets with the same problem.
Interesting that this kind of stain (not like the regular stain) is not affecting other stamps that are mounted on the same album page.
Any knowledge about this problem? including value.
Thanks
- Creato 18 ago 2024 a 12:53 (#1784913)
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wycombe1 100% (84983x)

1886 messaggi

Regno Unito
In the past they have been stored in a humid environment which has 'tropicalised' the gum and turned it brittle and brown. It looks like you may also have a fungal infection in the gum as well known as 'foxing'.
- Creato 20 ago 2024 a 02:18 (#1785534)
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worldphila 100% (1744x)

360 messaggi

Israele
wycombe1

In the past they have been stored in a humid environment which has 'tropicalised' the gum and turned it brittle and brown. It looks like you may also have a fungal infection in the gum as well known as 'foxing'.

Creato 20 ago 2024 a 02:18

#1785534
Many thanks
I know about fungus stains. A fungus stain has also an affect on the front side of the stamp. This's not the case. Probably an acid gum.
My question is also if these stamps could be kept without this affect?
Or the gum was removed and these kind of mint stamps have a new gum coat?
- Creato 20 ago 2024 a 07:12 (#1785645)
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winnipeg 100% (5665x)

183 messaggi

Canada
Checked out similar set sold on E on August 5,the gum on that set is completely different.
- Creato 20 ago 2024 a 10:36 (#1785729)
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winnipeg 100% (5665x)

183 messaggi

Canada
Have just checked here in sold items and one set have a pretty similar glue as yours.You probably have to look for forums about Iranian stamps to find more information.
- Creato 20 ago 2024 a 10:43 (#1785735)
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worldphila 100% (1744x)

360 messaggi

Israele
winnipeg

Have just checked here in sold items and one set have a pretty similar glue as yours.You probably have to look for forums about Iranian stamps to find more information.

Creato 20 ago 2024 a 10:43

#1785735
Many thanks for your help.
- Creato 20 ago 2024 a 11:27 (#1785768)
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worldphila 100% (1744x)

360 messaggi

Israele
winnipeg

Have just checked here in sold items and one set have a pretty similar glue as yours.You probably have to look for forums about Iranian stamps to find more information.

Creato 20 ago 2024 a 10:43

#1785735
Many thanks for your help.
- Creato 20 ago 2024 a 11:27 (#1785771)
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worldphila 100% (1744x)

360 messaggi

Israele
winnipeg

Have just checked here in sold items and one set have a pretty similar glue as yours.You probably have to look for forums about Iranian stamps to find more information.

Creato 20 ago 2024 a 10:43

#1785735
Many thanks for your help.
- Creato 20 ago 2024 a 11:27 (#1785774)
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worldphila 100% (1744x)

360 messaggi

Israele
winnipeg

Have just checked here in sold items and one set have a pretty similar glue as yours.You probably have to look for forums about Iranian stamps to find more information.

Creato 20 ago 2024 a 10:43

#1785735
Many thanks for your help.
- Creato 20 ago 2024 a 11:27 (#1785777)
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worldphila 100% (1744x)

360 messaggi

Israele
winnipeg

Have just checked here in sold items and one set have a pretty similar glue as yours.You probably have to look for forums about Iranian stamps to find more information.

Creato 20 ago 2024 a 10:43

#1785735
Many thanks for your help.
- Creato 20 ago 2024 a 11:27 (#1785780)
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worldphila 100% (1744x)

360 messaggi

Israele
winnipeg

Have just checked here in sold items and one set have a pretty similar glue as yours.You probably have to look for forums about Iranian stamps to find more information.

Creato 20 ago 2024 a 10:43

#1785735
Many thanks for your help.
- Creato 20 ago 2024 a 11:27 (#1785783)
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worldphila 100% (1744x)

360 messaggi

Israele
winnipeg

Have just checked here in sold items and one set have a pretty similar glue as yours.You probably have to look for forums about Iranian stamps to find more information.

Creato 20 ago 2024 a 10:43

#1785735
Many thanks for your help.
- Creato 20 ago 2024 a 11:27 (#1785786)
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Iran / Persia stamps gum problem