Saturday, April 4, 2020

Smartphone Light Table

This is probably old news for experienced collectors but I feel like I discovered something.

One of the features of many banknotes is the watermark in the paper. Hold the bill up to the light and a latent image can be seen.

Watermark on a €50 banknote.
Many collectors use a light table to view the watermark but if you have a smartphone, guess what? You finally have a use for those flashlight apps. Bonus points if you have a tablet. It also makes viewing security threads and registration marks a lot easier.


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