Vadian (Joachim Vadian or Joachim von Watt) was a historic figure from the late 15. and early 16. century who acted as a doctor, scholar and major of the city of St. Gall. He also led the conversation of the city from Catholicism to Protestantism (in the interpretation of Zwingli). Besides that, he is claimed as the founder of the library in St. Gall, which is now the cantonal library (under the name “Vadiana”). For centuries, this library was called “Vadianische Bibliothek” (Vadian Library). This stamp is found in a book from 1784. It is a quite different stamp, comparred to current ones. The name of the library is shortend, the stamp itself is structed like a emblem, using symbols of enlightenment (the “opening” of the drape, the laurel, the star above).
This stamp, used in a book from 1801, uses basically the same symbols (an opening drape, laurel), but in a neo-classical style, as an oval, Stil, the name of the library is shortend but the effect is quite distinguished.