As an ignorant American, I found this article absolutely fascinating. It may be old news to all of you in the UK, but the interplay between domestic and foreign coinage and the effects of these scammers on the economies of so many countries is remarkable.
The Yellow Trade in Counterfeit Coins: How Yorkshire's Yellow Trade of coin clippers and counterfeiters changed Britain's economy in the 18th century.
https://www.historytoday.com/archiv...erfeit-coins