While most collectors believe that 1964 was the last year that the United States Mints struck 90% silver coins for circulation -- 1966 was actually the last year of the 90% silver coinage output for circulation! Specifically, 1964 dated 90% silver coins were produced from January 1964 through April of 1966!
Information obtained from ConecaOnline.org website
Guide created: 03/12/07 (updated 11/12/09)


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