olemus
Wiktionary:
1. a piece of paper currency

ülevaateid
https://en.wikipedia.org/wiki/Banknote
https://www.ecb.europa.eu/euro/banknotes/html/index.en.html
https://en.wikipedia.org/wiki/Banknotes_of_the_United_States_dollar

turvalisus
https://www.visualcapitalist.com/10-banknotes-around-world-security-features/
https://www.ecb.europa.eu/euro/pdf/material/A1_poster_secfeatures_en.pdf?d620f93d4a28e73725e122d1b03b62cd
https://banknotes.rba.gov.au/counterfeit-detection/list-of-security-features/
https://www.snb.ch/en/iabout/cash/series8/id/cash_series8_security

vt ka
- optiline turve