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3632A Dull Blade In Two Valleys

 
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Posted 06/02/2020   10:46 am  Show Profile Bookmark this topic Add bluejay2 to your friends list Get a Link to this Message
I have found a specimen of 3632A with a die cutting issue. Two of the valleys on the right side of the stamp were not cut. Thus, when the stamps were separated, it tore the paper like an old-style perforation.

Would this have been caused by a dull blade? Other theories?
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Posted 06/02/2020   11:17 am  Show Profile Bookmark this reply Add Petert4522 to your friends list  Get a Link to this Reply
I can not remember this being reported earlier but it is a nice EFO. And yes, I suppose it could have happened the way bluejay2 describes it.


Peter
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Posted 06/02/2020   5:29 pm  Show Profile Bookmark this reply Add rod222 to your friends list  Get a Link to this Reply

Quote:
Would this have been caused by a dull blade?


Opinion.
Yes I agree, it surprises me there is not more of this,
For the amount being die cut, married to the very small margin of error.
An amazing record for modern technology.
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Posted 06/02/2020   10:12 pm  Show Profile Bookmark this reply Add No1philatelist to your friends list  Get a Link to this Reply
I see that it actually affects two valleys as mentioned. Is it possible the cutting edge was hit by something and bent the blade/die up and away from the normal height.
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Edited by No1philatelist - 06/04/2020 9:37 pm
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Posted 06/02/2020   11:36 pm  Show Profile Bookmark this reply Add rod222 to your friends list  Get a Link to this Reply
Opinion:
the blade / die would be too small to bend,
possibly only +/- 1mm long.
Entirely guessing, never seen a die cut, die.

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Posted 06/03/2020   12:06 am  Show Profile Bookmark this reply Add rod222 to your friends list  Get a Link to this Reply
A similar process for labels, briefly addressed here,
Postage stamps may be similar?
https://www.montex-print.de/en/diecutting/
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Posted 06/03/2020   10:57 pm  Show Profile Check eyeonwall's eBay Listings Bookmark this reply Add eyeonwall to your friends list  Get a Link to this Reply
I've seen/handled a die cutting die at the BEP - fairly shallow, but if hit hard enough, sure part of it could be deformed enough to no longer come into contact with the stamp paper.

I've also seen coils that were poorly die cut along the entire height, but it is unclear of ot was a worn die or low pressure.
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