who is he?
Eighth Chief Engraver of the United States Mint
Introduction
was the eighth Chief Engraver of the United States Mint 
what is roosevelt dime? Is the current dime, or ten-cent piece, of the United States who designed it? John R. Sinnock
He was the eighth Chief Engraver of the United States Mint. He was the eighth Chief Engraver of the United States Mint. The eighth Chief Engraver of the United States Mint
John R. Sinnock John R. Sinnock John R. Sinnock
Introduction Introduction Introduction
John Ray Sinnock (July 8, 1888 – May 14, 1947) was the eighth Chief Engraver of the United States Mint from 1925 to 1947. was the eighth Chief Engraver of the United States Mint  John Ray Sinnock (July 8, 1888 – May 14, 1947) was the eighth Chief Engraver of the United States Mint from 1925 to 1947.
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John R. Sinnock [SEP] Introduction
John Ray Sinnock (July 8, 1888 – May 14, 1947) was the eighth Chief Engraver of the United States Mint from 1925 to 1947.