23.5 mm diameter, 5.83 grams (90 grains), reeded (milled) edge Date Mintage Composition 1927 8,000,000* (most common date) 72% silver and 28% copper 1931 500,000 (key date of series) 1933 1,000,000 1934 398,000 1935 5,600,000 1939 3,000,000* 1940 2,000,000* 1942 5,000,000 * Proof issues reportedly struck. Mintage unknown