JFK's note were not FRN—Federal Reserve Notes. They were United States Notes. Big difference. They were loans from the future income of the US Government at a much smaller discount. . . and cut the Federal Reserve Bank out of their cut. That is what made the owners of the FED irate.
The very first Executive Order that President Johnson signed was one ordering the destruction of those United States Notes. . . and he signed it five minutes after he was sworn into office aboard Air Force One, on an order already prepared for him, typed on a typewriter with a typeface that did not exist on AF-1, but was common in his office in DC. It was prepared with the signature line "Lyndon Baines Johnson, President of the United States." It was WAITING FOR HIM, on board since before Air Force One left Washington, while Kennedy was still alive!
I always figured the Fed had a hand in the planning.
This executive order amended Executive Order 10289 (dated September 17, 1951)[1] by delegating to the Secretary of the Treasury the president's authority to issue silver certificates under the Thomas Amendment of the Agricultural Adjustment Act, as amended by the Gold Reserve Act. The order allowed the Secretary to issue silver certificates, if any were needed, during the transition period under President Kennedy's plan to eliminate Silver Certificates and use Federal Reserve Notes.
https://en.wikipedia.org/wiki/Executive_Order_11110
The very first Executive Order that President Johnson signed was one ordering the destruction of those United States Notes. .
Baloney. US Notes were issued until 1971. Strangely, no mention of them in LBJs 1963 Executive orders. Or 1964 EOs. Or 1965 EOs. Or 1966 EOs. Or 1967 EOs. Or 1968 EOs. Or 1969 EOs.
https://www.archives.gov/federal-register/executive-orders/1963-johnson.html