BluHawk
Joined: 29-May-2020
Posts: 1366
Posted: 16-Apr-2021, 12:26
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Posted: 16-Apr-2021, 12:26
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Please can someone tell me if this is or isn't a watermark?
For something to be called a watermark - should it be visible from both sides of a note?
I ask this because the 2015 banknote
5 Ngultrum
has a small window/area on the Obverse - the digits here are only visible when tilted. It was not easy to obtain this photo.
This area is not visible on the reverse.
Thanks for your help.
Idolenz
Joined: 13-Jul-2013
Posts: 6591
Posted: 16-Apr-2021, 13:15
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Posted: 16-Apr-2021, 13:15
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Maybe more like a tactile security feature?
BluHawk
Joined: 29-May-2020
Posts: 1366
Posted: 16-Apr-2021, 14:51
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Posted: 16-Apr-2021, 14:51
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Thanks Idolenz.
At the start, I didn't realise this existed. It looked like a grey patch on the note.
Wonder if it reasonable to fill the add/modify data & load this photo?
Serial_Number_8
Joined: 2-May-2020
Posts: 1145
Posted: 16-Apr-2021, 15:50
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Posted: 16-Apr-2021, 15:50
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Many
security features are present on today's banknotes. IMO: the OP image appears to be "SPFX ink" according to the link.
BluHawk
Joined: 29-May-2020
Posts: 1366
Posted: 16-Apr-2021, 17:05
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Posted: 16-Apr-2021, 17:05
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Thanks Serial_Number_8.
I wonder how much of a detriment these security features have caused to the counterfeiters.
Serial_Number_8
Joined: 2-May-2020
Posts: 1145
Posted: 17-Apr-2021, 00:58
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Posted: 17-Apr-2021, 00:58
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Quote: "BluHawk"Thanks Serial_Number_8.
I wonder how much of a detriment these security features have caused to the counterfeiters.
Not as good as they'd like I'm sure (not '0' for instance). Law enforcement measures the # of fakes just like scientist calibrate contaminants (or pollutants): parts per million & paper fakes are still a big problem. The best measure against counterfeiting is still going polymer. The holographic windows are really tough to recreate cheaply.
blue-m
Joined: 11-Nov-2013
Posts: 532
Posted: 17-Apr-2021, 15:12
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Posted: 17-Apr-2021, 15:12
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Quote: "BluHawk"Please can someone tell me if this is or isn't a watermark?
For something to be called a watermark - should it be visible from both sides of a note?
I ask this because the 2015 banknote 5 Ngultrum
has a small window/area on the Obverse - the digits here are only visible when tilted. It was not easy to obtain this photo.
This area is not visible on the reverse.
Thanks for your help.
If I remember right it is called a latent image.
BluHawk
Joined: 29-May-2020
Posts: 1366
Posted: 18-Apr-2021, 23:31
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Edited: 18-Apr-2021, 23:32
Posted: 18-Apr-2021, 23:31
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Edited: 18-Apr-2021, 23:32
RMA - Bhutan
edit: couldn't save the image in a larger size.
blue-m
Joined: 11-Nov-2013
Posts: 532
Posted: 19-Apr-2021, 08:07
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Posted: 19-Apr-2021, 08:07
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Quote: "BluHawk"RMA - Bhutan
edit: couldn't save the image in a larger size.
very similar to what they do on some coins. 500 yen from Japan comes to mind.
BluHawk
Joined: 29-May-2020
Posts: 1366
Posted: 19-Apr-2021, 09:33
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Posted: 19-Apr-2021, 09:33
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Quote: "blue-m"
Quote: "BluHawk"RMA - Bhutan
edit: couldn't save the image in a larger size.
very similar to what they do on some coins. 500 yen from Japan comes to mind.
Interesting, didn't know this technology was available for coins
ngdawa
Joined: 18-Oct-2011
Posts: 5587
Posted: 20-Apr-2021, 15:35
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Posted: 20-Apr-2021, 15:35
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To confirm: No, it's not a watermark. And like
blue-m said, it is a
latent image.
To answer your other question: Yes, watermark is cissible on both aides of the note when you hold it onto the light.
Watermark, both sides:
Latent image:
Coin referee for: AZE, FRO, GRL, US-HI, KOR, KGZ, MLI, MHL, MMR, PRK, UZB, SML, TAT, TWN, TJK
Banknote referee for: AGO, AZE, BLR, ECS, GEO, HTI, KAZ, KGZ, KOR, MNG, MRT, PMR, PRK, ROK, SWE, TJK, TKM, TUR, UZB, WSM, ZWE