This stamp attracted our attention because of its text, which indicates that the book has been eliminated as duplicate from the collection of one of the most well-known and most precious Abbey Libraries, namely this of St. Gallen in Switzerland. It is now situated in the library on research of the history of education in Berlin.
Rarely, an additional stamp is produced only for duplicates. Generally there are solely stamps which indicate that an oeuvre is completely eliminated from a collection. It can be assumed that the current book was part of an exchange of duplicates.