. . . . "1852-02-06Z"^^ . . "John Adam Eckfeldt (June 15, 1769 \u2013 February 6, 1852; usually Adam Eckfeldt) was a worker and official in the early days of the United States Mint. A lifelong Philadelphian, Eckfeldt served as the second chief coiner of the Mint, from 1814 until 1839.Eckfeldt's father owned a large smithy and involved himself in early attempts at American coinage."@en . "2nd Chief Coiner of theUnited States Mintat Philadelphia" . "Mint official" . "1769-06-15Z"^^ . . . . . . . "Adam Eckfeldt"@en . "Eckfeldt, Adam"@en . . "1852Z"^^ . . "1769Z"^^ . "John Adam Eckfeldt"@en . . .