Blog

In January 1988, Australia issued a commemorative $10 note that became the world’s first successful polymer banknote. Developed by the Reserve Bank of Australia and Australia’s CSIRO scien … read more

In 1943, the U.S. Mint replaced copper pennies with zinc-coated steel cents because copper was needed for the World War II effort. But a small number of copper-alloy blanks were apparently left inside … read more

Martha Washington remains the only woman whose portrait has appeared on a U.S. currency note. Her portrait was featured prominently on the front of the Series 1886 and 1891 $1 Silver Certificates. She … read more

The back of the modern $2 bill features an engraving based on John Trumbull’s famous painting Declaration of Independence—but it isn’t an exact copy. Trumbull’s Capitol paintin … read more

This month marks 80 years since Hungary introduced the forint on August 1, 1946, ending the pengő’s historic collapse. The conversion rate was astonishing: one forint replaced 400,000 quadrillio … read more