Giovanni Antonio Santarelli was a sculptor / medallist and gem engraver. He was also known as Santarelli, Giovanni Antonio.
Giovanni Antonio Santarelli (1769-1826), a highly skilled Italian gem engraver and medallist, worked as engraver to Mints of Milan and Parma, also becoming a professor at the Academy in Florence where he lived most of the latter part of his life. Santarelli is reported to have worked with the Pichlers, another well-known family of Italian gem engravers. Reference: Sotheby’s.