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Pillar Of The Community
Canada
1791 Posts
Posted 05/07/2022   5:48 pm  Show Profile Bookmark this topic Add Just_fella to your friends list Get a Link to this Message
Apparently I'm not understanding something and I'm curious if someone could shed some light for me.
I thought I had figured it out but I guess not.

https://www.rpsl.org.uk/Portals/0/R...kExtract.pdf

What does this mean?

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Pillar Of The Community
Netherlands
1509 Posts
Posted 05/07/2022   6:09 pm  Show Profile Bookmark this reply Add NSK to your friends list  Get a Link to this Reply
Try to make your question SMART. Now, you leave us guessing what your question is.

It indicates the type of variety. For sheet printed in the normal direction and sheets printed in inverted direction, the pin that shows the error will be # of pins - pin nr. that shows the error.

Also, since normally a row of stamps will have southeast corner letters A to L, the inverted perforation will pass through the perforator L to A.

Your blue line is for the 1d red catalogued in SG's specialised volume 1, under C3. On sheets perforated normally, the 14 gauge stamp with southeast corner letter L has a variety nr. 11 that affects the 13th pin.

Sheets perforated inverted will show the variety on stamp A in the row (as that will be at the left side), and affecting pin 1 (as there are 13 pins in total and the 13th pin will be the first) when looked at the stamp in upright position.

It is known to occur on stamps from the 10 plates listed.
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Edited by NSK - 05/07/2022 6:14 pm
Pillar Of The Community
Canada
1791 Posts
Posted 05/08/2022   4:22 pm  Show Profile Bookmark this reply Add Just_fella to your friends list  Get a Link to this Reply
Thanks
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Pillar Of The Community
Canada
1791 Posts
Posted 05/11/2022   7:45 pm  Show Profile Bookmark this reply Add Just_fella to your friends list  Get a Link to this Reply
Does this look like a screwdriver mark?
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Pillar Of The Community
United States
7953 Posts
Posted 05/11/2022   7:56 pm  Show Profile Bookmark this reply Add Petert4522 to your friends list  Get a Link to this Reply
If you had too much coffee, maybe. What is the reason behind this?


Peter
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Valued Member
Canada
493 Posts
Posted 05/11/2022   7:59 pm  Show Profile Bookmark this reply Add Casey Magoo to your friends list  Get a Link to this Reply
Don't judge, especially if I have a similar variety
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my best friend has four legs
and a soft pillow
Pillar Of The Community
Canada
1791 Posts
Posted 05/11/2022   8:01 pm  Show Profile Bookmark this reply Add Just_fella to your friends list  Get a Link to this Reply
Too much coffee I guess, thanks
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Pillar Of The Community
Canada
1791 Posts
Posted 05/11/2022   9:30 pm  Show Profile Bookmark this reply Add Just_fella to your friends list  Get a Link to this Reply
I'm gonna guess this is the coffee or just a good imagination
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Pillar Of The Community
United States
7953 Posts
Posted 05/11/2022   9:42 pm  Show Profile Bookmark this reply Add Petert4522 to your friends list  Get a Link to this Reply
OK, I was just pulling your leg. But I have no idea what it could be other then a lack of ink. The picture is very un-focused, and it is not really clear


Peter
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Valued Member
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United States
36 Posts
Posted 05/11/2022   11:10 pm  Show Profile Bookmark this reply Add Chesham85 to your friends list  Get a Link to this Reply
Do you have the originals of these stamps so you could rescan? Also show them in their original colors as I think the under inking will be much clearer.

The upper stamp is a penny red and I think would look normal for the plate if displayed in red. The lower stamp looks like a penny black and looks more likely to have occurred with the cancel mark.
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Edited by Chesham85 - 05/11/2022 11:45 pm
Pillar Of The Community
Netherlands
1509 Posts
Posted 05/12/2022   03:08 am  Show Profile Bookmark this reply Add NSK to your friends list  Get a Link to this Reply
These plates were used to print a lot of stamps. They wear down during use, as the recess-printing process requires pressure to press the paper into the recesses holding the ink to pick up that ink. The turned background means that there are many 'ridges' on the plate.

The consequences of plate wear can be seen on stamps from plate 1 before hardening that tend to have a greyish and not black colour.

Damage is common. Often it is repaired quickly and, therefore, not constant or unplated.
Other than that, if you are looking at a stamp that is between 150 and 182 years old and has been used, the surface may be damaged.

As I suggested before: make your posts SMART. Do not let us guess what you want to know, but provide some understandable background to your question: put it in perspective.
Vague scans in black and white of unplated stamps are not helpful.
Also, consider the SG Specialised Catalogue and British philatelic research are the standard for these stamps. It is unclear whether 'screwdriver mark' means you think someone used a screwdriver to damage the plate or it is a terminology used in a catalogue that is not the 'standard' for these stamps.
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Pillar Of The Community
4352 Posts
Posted 05/12/2022   04:08 am  Show Profile Bookmark this reply Add John Becker to your friends list  Get a Link to this Reply
The four closeup images are essentially worthless when taken completely out of their context.
Scans of the entire stamps need to accompany the closeups.
Otherwise, not much reason to continue this thread.
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Pillar Of The Community
Learn More...
8300 Posts
Posted 05/12/2022   07:44 am  Show Profile Bookmark this reply Add rogdcam to your friends list  Get a Link to this Reply
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Pillar Of The Community
Canada
1791 Posts
Posted 06/23/2022   10:33 am  Show Profile Bookmark this reply Add Just_fella to your friends list  Get a Link to this Reply
Curious
Hopefully a simple yes or no question.

Is it possible for a stamp to change appearance in different lighting, not colour or shades, but characteristics?
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Pillar Of The Community
United States
7953 Posts
Posted 06/23/2022   10:55 am  Show Profile Bookmark this reply Add Petert4522 to your friends list  Get a Link to this Reply
The answer was already given above. Yes. Plate wear will do it


Peter
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Pillar Of The Community
Canada
1791 Posts
Posted 06/23/2022   11:04 am  Show Profile Bookmark this reply Add Just_fella to your friends list  Get a Link to this Reply
Thanks peter,
Sorry to bring it up again, was just having trouble understanding,


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Edited by Just_fella - 06/23/2022 11:31 am
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