30.5 mm diameter, 11.33 grams (175 grains), plain edge with center hole

Date

Mintage

Composition

1927

1,500,000* (most common date)

Cupronickel alloy (75% copper and 25% nickel)

1933

250,000

1934

125,000

1935

575,000

1940

200,000*

1941

100,000* (key date of series)

1942

1,000,000

Bronze alloy (97% copper, 2.5% zinc, and 0.5% tin)

1944

1,000,000

* Proof issues reportedly struck. Mintage unknown