Information about John R. Sinnock

John R. Sinnock (8 July 1888 - 14 May 1947)

John Ray Sinnock was the eighth Chief Engraver of the United States Mint from 1925 to 1947.

Sinnock was the designer of the Roosevelt dime and Franklin half dollar, among other U.S. coins. His initials can be found at the base of the Roosevelt and Franklin busts. He also sculpted, although did not design, the Purple Heart medal, the Yangtze Service Medal, and various other medals and commemorative coins.

Sinnock was born July 8, 1888, in Raton, New Mexico, and was educated at the Philadelphia Museum School of Industrial Art. He won the A.W. Mifflin Award for study abroad. Sinnock was well-travelled. His longtime confidante was Margaret Campbell, who inherited much of his artwork as well as his personal collection of materials related to the development of the Roosevelt Dime.

For ten years, Sinnock was an art instructor at both his alma mater and at Western Reserve University. He was appointed Assistant Engraver and Medallist at the Philadelphia Mint in 1917 before becoming the Chief Engraver in 1925.

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