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Topic: Alan Turing featured on back of UK £50 polymer banknote  (Read 1561 times)
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« Reply #1 on: November 06, 2022, 02:00:23 pm »

This banknote is printed by DeLaRue (no news there). But I only recently learnt that two polymer substrates are used by DeLaRue for printing. According to a deal the Bank of England made in 2019 55% of the first batch are being printed on ''Guardian'' substrate and 45% on Safeguard substrate. And yes, if one looks really carefully one can see the difference between the two.
I have seen pictures on a German blog (I am not sure if I am allowed to link it).


Differences can also be seen on the polymer £20 featuring JMW Turner where 75% are being printed on ''Guardian'' and 25% on Safeguard.

BWJM
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« Reply #2 on: November 06, 2022, 11:18:35 pm »

I have a small handheld detector which validates Guardian substrate banknotes.  It's pretty cool.

BWJM
Member of CPMS, RCNA, ONA, ANA, IBNS, WCS.
President, IBNS Ontario Chapter.
Treasurer, Waterloo Coin Society.
Show Chair, Cambridge Coin Show.
Fellow of the Ontario Numismatic Association.
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« Reply #3 on: November 07, 2022, 05:20:04 am »

I have a small handheld detector which validates Guardian substrate banknotes.  It's pretty cool.

Is it a "Verus™ H" made by CCL Secure (makers of the Guardian substrate)?

BWJM
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« Reply #4 on: November 07, 2022, 07:23:34 am »

Is it a "Verus™ H" made by CCL Secure (makers of the Guardian substrate)?
Yes.

BWJM
Member of CPMS, RCNA, ONA, ANA, IBNS, WCS.
President, IBNS Ontario Chapter.
Treasurer, Waterloo Coin Society.
Show Chair, Cambridge Coin Show.
Fellow of the Ontario Numismatic Association.
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« Reply #5 on: November 08, 2022, 02:15:01 am »

 

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