"Fraudsters often falsely claim that the purported Federal Reserve notes or bonds that they hold are somehow very special and are not known to the public because they are so secret. Fraudsters have attempted to sell these worthless instruments, or to redeem or exchange them at banks and other financial institutions, or to secure loans or obtain lines of credit using the fictitious instruments as collateral.
The Federal Reserve has never issued any bonds or notes with coupons attached."
https://www.newyorkfed.org/banking/FRBNY_archived_fraud_alerts.html
"These bogus securities are commonly known as "Morganthaus." Henry Morganthau, Jr. was Secretary of the Treasury in 1934. These "federal notes" are not currency, nor are they bearer bonds. They are crude forgeries that appear to have originated out of the Philippines. The story being told is that the United States shipped them to Philippine freedom fighters during World War II to help with the war effort. Some "investors" have brought them to us in so-called "Federal Reserve" metal boxes, along with other related certificates"
https://www.treasurydirect.gov/instit/statreg/fraud/fraud_phonyexamples.htm
"The chests have been used to dupe lenders to lending but a fraction of the value of the underlying securities. Even if only 1% of the face value of the bonds is sought, it’s a big fraud."
https://www.international-due-diligence.org/usa-1934-series-bonds/
"Operation Bernhard was the name of a secret German plan devised during World War II to destabilise the British economy by flooding the country with forged Bank of England £5, £10, £20, and £50 notes."
https://www.jewishvirtuallibrary.org/operation-bernhard
"The $2 quadrillion is the value of the Treaty of Versailles Bonds in the Global Debt Facility"
https://twitter.com/KarenHudes/status/1092235283221934080
Financing a breakaway civilization: A series of scandals involving allegedly counterfeit "bearer bonds" make up the biggest and most under-reported financial story of the 21st century.
https://www.investmentwatchblog.com/financing-a-breakaway-civilization-a-series-of-scandals-involving-allegedly-counterfeit-bearer-bonds-make-up-the-biggest-and-most-under-reported-financial-story-of-the-21st-century-2/
"Authorities believe criminals may have been planning to sell the bonds to an unsuspecting nation.
Potenza's prosecutor, Giovanni Colangelo, says an international network "in many countries" is behind the forgeries.
Italian daily Corriere della Sera said on its website that the criminal network was believed to be interested in acquiring plutonium, citing sources at the prosecutors' office.
Police videos showed images of the trunks, with Federal Reserve System, Treaty of Versailles stamped on the side in large, golden letters.
Bond certificates marked Chicago, Illinois, Federal Reserve Bank and other securities, some for $US1 billion, were also shown.
In 2009, Italian financial police seized $US742 billion of fake US bearer bonds in Chiasso, on the Swiss-Italian border."
https://www.abc.net.au/news/2012-02-18/italian-police-seize-24us6-trillion-in-fake-bonds/3837648