A kaleidoscope of currency reveals what humans have valued over time. Hi-resolution scans of banknotes from 23 countries ranging from the 1800s to the modern-day. Machine learning programs were used to zoom in on the intricacies of the engravings.
1947
1968
2002
2012
2021
—
2025
2006
2008
2001
1976
1953
2020
2023
1980
2015