"GARDNER, John Smith (fl 1794-98) Colonial American engraver, diesinker at Philadelphia Mint. An assistant to engraver Robert Scot (q.v.) as early as 1794, Scot did not ...
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tolerate having such assistance.
While not credited with engraving full dies, Gardner did engrave device punches which Scot used for all six denomination coins. Ultimately Scot caused Gardner to leave the Mint in 1798." - http://www.medalartists.com/gardner-john-smith.html, 19.08.2018
