Presidential Numismatic Research Framework — Collectors Universe https://forums.collectors.com/ Mon, 24 Aug 2026 08:00:07 +0000 en Presidential Numismatic Research Framework — Collectors Universe Two Presidents, Seven Years Apart, Present Official U.S. Mint coins to the Same Congressman https://forums.collectors.com/discussion/1124873/two-presidents-seven-years-apart-present-official-u-s-mint-coins-to-the-same-congressman Tue, 11 Aug 2026 19:39:03 +0000 U.S. Coin Forum DrDarryl 1124873@/discussions

From the PNRF Case Study No. 4

https://www.pnrframework.org/blog

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