Global Coin Announces Two Landmark American Silver Eagle Set Completions: “The Impossible Set” (MS70) and the “Ultimate 40-Year Proof Set” (PF70 Ultra Cameo)

Global Coin celebrates two American iconic Silver Eagle triumphs: “The Impossible Set,” a complete 1986–2026 NGC MS70 ...
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A guide book of modern United States proof coin sets / David W. Lange ; foreword by Q. David Bowers

Background to collecting the U.S. Mint proof sets. History of proof sets ; Collecting and storing proof sets -- U.S. Mint proof sets, by year. Proof sets: a date by date analysis ; Vintage years: 1936 ...