The Teylers Stichting had him design a prize medal in 1778 that is still used, and after his death they purchased the stamp press for it from the Holtzhey estate for 100 guilders.
The Teylers Stichting had him design a prize medal in 1778. This prize medal in 1778 is still used. They purchased the stamp press for it from the Holtzhey estate for 100 guilders. This was after his death.