I have done a little digging to find out a little more about the work of Venuti, cited in Akerman's letter, posted yesterday.
Rudolfino Venuti (1705-63) was working in the mid 18th century, some 100 years prior to Akerman. Bassoli's book on the Antiquarian Books on Coins and Medals from the Fifteenth to the Nineteenth Century (2001) states that:
"Rudolfino Venuti richly illustrated the medal collection of Cardinal Albini in 1744 (which later passed to the Vatican Library and was opened to the public by Clement XII). The work also included Benedict XIV's additions, and the great classical and modern collection of Cardinal Carpegna."
Sadly his work does not seem to have been scanned onto Google Print, although there seem to be plenty of references to it cited.