Yes, this is very interesting. I'll definitely buy the 1979 Spanish 500 pesetas. Such an early year is surprising for anti-Stokes luminescence – a great find!
Vietnamese dong notes also extend the initial use of this security feature on polymer.
Thank you for expanding the list of banknotes with anti-Stokes luminescence; this is very interesting to me. I hope to start buying a little of these banknotes soon.
I promised to send the front sides of my Bank of England banknotes, which are shown in the thread.
Something of interest, I bought a 20 Pound note with the Bailey signature, prefix is ED.
It shows no anti-Stokes with my laser, which is a USB-powered 980nm device.
That is strange. I see your note had a DK prefix. Maybe that is a factor?
I have a 5 and 10 Pound note on the way also, from a different seller.
About the 20 pounds, it actually does fluoresce but very dimly. It is the only note I have where the laser doesn't reveal the fluorescence in daylight and is very dim even in a dark room.
When I put it under the three LED lights I have, it was obvious.
Thanks again for the tip, it is very beautiful.
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