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Ribbed Papers

 
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Pillar Of The Community

Canada
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Posted 11/21/2019   08:09 am  Show Profile Bookmark this topic Add jimjung to your friends list Get a Link to this Message
Hi,

Resurrecting this old thread for a question. I had been asking around about this Canada stamp which appears to be printed on Ribbed Paper. An expert told me that there is a rare case where the stamp was printed on the USA Ribbed Paper used on stamps from this thread. It apparently was the same paper.

Does this look like the Ribbed Paper from this thread. It looks similar to me but maybe a trained eye could give a better opinion.


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Posted 11/21/2019   08:18 am  Show Profile Check 51studebaker's eBay Listings Bookmark this reply Add 51studebaker to your friends list  Get a Link to this Reply
Hi jimjung,
Can you post some images with a strong backlight?
Don
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1375 Posts
Posted 11/21/2019   11:20 am  Show Profile Bookmark this reply Add stamperix to your friends list  Get a Link to this Reply
Yes, this would be useful to see if has an appearance as laid paper, but for the ribbed paper, also a photo under low oblique light would be useful (see my image in this thread a bit earlier).
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United States
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Posted 11/26/2019   6:03 pm  Show Profile Check sinclair2010's eBay Listings Bookmark this reply Add sinclair2010 to your friends list  Get a Link to this Reply
It would be nice to see the front of the stamp. The images provided show that it is highly unlikely to be like the ribbed papers of the Continental bank notes. I suspect that images with a backlight would show a paper texture similar that of soft paper stamps of the bank note period.
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Posted 11/26/2019   7:14 pm  Show Profile Bookmark this reply Add littleriverphil to your friends list  Get a Link to this Reply
They're Small Queens.

http://goscf.com/t/70296
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Israel
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Posted 08/05/2021   12:10 pm  Show Profile Bookmark this reply Add gum side to your friends list  Get a Link to this Reply

Quote:
FROM cfrphoto on 4-20-2018: I did a cursory check of some 3 cent Scott 158 stamps in the reference collection and found that vertical rib paper examples are taller and narrower than examples with horizontal ribbing. I also checked a few US official examples and found the same relationship between vertically ribbed and special printings with horizontal ribbing. I did not check plain examples to determine if two size populations exist. The Scott Catalog reports that National grilled stamps in the early state tend to be taller, printed on vertical mesh paper, and examples with late state grills, printed on horizontal mesh paper, were shorter, with a height difference of about 1/4mm.


On the heels of cfrphoto's post I'm resurrecting this thread to ask a related question pertaining to Palestine Mandate stamps:

a certain stamp series (the pictorials) was partially produced on what the catalogues call "vertically ribbed paper" and also "thin semi-transparent vertically ribbed paper". These are generally considered 2 different paper types - but I'm wondering if this may be the same type of paper in both cases.

From what I've read the ribbing process (done in the UK along with the stamp production) was accomplished by a machine during the drying process after the paper had been gummed:

If the ribbing on the thin paper is light and not very pronounced like on the regular thicker paper issue, is it possible that this is the reason why one version is on thinner paper and another on thicker paper - that the paper thickness is the result of how pronounced the ribbing is, how bunched up the paper has become, and not actually a different type of paper?

As I read cfrphoto's post above a similar thought ran through my head: a horizontally ribbed stamp may be shorter than a vertically ribbed stamp purely because of the tension in the paper pulling it in and making it shrink (and not because of a different type of paper being used)? And likewise a vertically ribbed stamp may be narrower because of the paper being pulled from the horizontal axes?
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Edited by gum side - 08/05/2021 12:12 pm
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Posted 08/05/2021   12:31 pm  Show Profile Check 51studebaker's eBay Listings Bookmark this reply Add 51studebaker to your friends list  Get a Link to this Reply
Split this thread from the original thread in US Classic Stamps http://goscf.com/t/61224 since it morphed towards Worldwide stamps.
Don
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United States
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Posted 08/06/2021   9:20 pm  Show Profile Bookmark this reply Add EMaxim to your friends list  Get a Link to this Reply

Quote:
From what I've read the ribbing process (done in the UK along with the stamp production) was accomplished by a machine during the drying process after the paper had been gummed:


I'm no expert, but I think there may be some confusion here between ribbed paper and ribbed gum. From what I've read (e.g., in Williams, Fundamentals of Philately), they're quite different things.

Also, if someone could post a scan of ribbed paper, I'd be grateful.
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Edited by EMaxim - 08/06/2021 9:22 pm
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Posted 08/06/2021   11:13 pm  Show Profile Bookmark this reply Add billsey to your friends list  Get a Link to this Reply
Ribbed paper typically doesn't show up easily on a scan. It's most visible with light shining obliquely to the surface, in order to create shadows from the ribbing. When viewed in a scan or in fluid the paper tends to look normal rather than striped like laid paper.
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Posted 08/07/2021   10:09 am  Show Profile Bookmark this reply Add EMaxim to your friends list  Get a Link to this Reply
Thanks, billsey. That also helps clarify the difference between ribbed and laid paper, inasmuch as the processes for identifying them are very different as well. Ribbed gum, on the other hand, seems another matter entirely.
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United States
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Posted 08/07/2021   2:25 pm  Show Profile Bookmark this reply Add billsey to your friends list  Get a Link to this Reply
Yes, ribbed gum or gum with gum breakers, is used to help keep the stamps from curling and really has nothing to do with the paper itself.
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