"Stierle, Johann Jacob Gottfried (Germ.). Medallist, Coin-and Seal-engraver, born at Berlin in 1764, died there at the end of September 1806. He was the son of a saddler, and learned engraving at the Die-sinking works of D. Loos. In 1784 he was appointed Medallist and Engraver to the Berlin Mint, which office he held until his death, with an interruption between 1787 and 1791. ... " - Forrer, L. "Biographical Dictionary of Medallists", Bd. 5 (London 1912), S. 687
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