Tuesday, November 14, 2017

They also use ...optically variable ink. This is ink that changes colour depending on the light used to look at it.


at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

Portugal Ukraine Russia (mercenaires killed)

  https://sicnoticias.pt/especiais/guerra-russia-ucrania/2025-04-03-video-russia-diz-ter-abatido-mercenarios-portugueses-na-ucrania-755f2fec