In 1975 to celebrate Leonardo da Vinci, John Pinches released a very special limited issue Leonardo da Vinci Saint Jerome Silver Proof Medal struck in solid .925 Sterling Silver weighing 50 Grams.
The reverse features Saint Jerome while the obverse in the center Leonardi Academia da Vinci with the writing Saint Jerome and the date 1481.
These Silver Proof Medals have been struck to proof quality using specially prepared dies and highly polished blanks.