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Rest in Peace

720 Posts
Posted 06/02/2015   11:51 am  Show Profile Bookmark this topic Add Glenn Estus to your friends list Get a Link to this Message
Interesting item I found while researching in the Postal Bulletin



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Pillar Of The Community
United States
1764 Posts
Posted 06/02/2015   1:00 pm  Show Profile Bookmark this reply Add essayk to your friends list  Get a Link to this Reply
Seasonal adjustment of gum was a subject for correspondence between the 3rd assistant PMG and the bank note companies at least as early as 1870. It was designed into contract specifications back then, but without specifying the details of its manufacture and character. Someone with more knowledge of the earlier issues can tell you whether or not this came up before 1870, but I tend to think that it did.

The problem of getting a gum that would stick when it should and not when it shouldn't was always a tough one to lick.
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Edited by essayk - 06/02/2015 1:01 pm
Bedrock Of The Community
United States
12128 Posts
Posted 06/02/2015   2:09 pm  Show Profile Bookmark this reply Add wt1 to your friends list  Get a Link to this Reply
An interesting read dating back to 1903 (pages 21-26) on how US Stamps were made. Page 24, Column 2 suggests that the gum was actually changed FOUR TIMES a year!

https://books.google.com/books?id=d...0gum&f=false
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Pillar Of The Community
1151 Posts
Posted 06/02/2015   3:09 pm  Show Profile Bookmark this reply Add stampmaster to your friends list  Get a Link to this Reply
This is one of the reasons why there used to be a lot more mint no gum stamps on the market then there is now. The older dealers I knew, and one or two very old collectors I personally knew said it was common practice to soak the gum of their collectable stamps for their collection to protect them from damage. I suspect some or maybe a lot of these stamps have now been regummed!

Cheers

David (Stampmaster)

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Australia
34055 Posts
Posted 06/18/2017   02:11 am  Show Profile Bookmark this reply Add rod222 to your friends list  Get a Link to this Reply

For Interest:
Guatemala C875

http://goscf.com/t/7155#7155
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