29 mm diameter, 11.66 grams (180 grains), reeded (milled) edge Date Mintage Composition 1927 8,000,000* (most common date) 72% silver and 28% copper 1931 250,000* (key date of series) 1933 500,000 1934 200,000 1935 2,850,000 1939 1,500,000* 1940 1,000,000 1942 2,500,000 * Proof issues reportedly struck. Mintage unknown