We'll say in the U.S., but I'd be happy to hear if anyone has any info for any location. I'm curious because I figure the technology used to print money in the early days wasn't too advanced and could be copied relatively easily.
hi! you may be interested in these previous posts
How were early currencies protected against counterfeiting?
Modern currency uses sophisticated anti-counterfeiting technology such as holograms or specialized paper. How did ancient civilizations deal with/prevent counterfeiting, and how much of an impact would it have on the economy?
Counterfeiting in the Ancient World?
How where clay tokens used as money to trade?
When were coins with reeded edges first made? Why did they decide to do this?
How did cultures mass produce coins before modern technology?
How did they prevent people from making counterfeit money before watermarks etc?
How did they prevent counterfeiting of paper money before modern things like holograms, fluorescent ink, and microprinting?