Discovered by FATB

Hellmut Schumann Antiquariat

Rare book and manuscript dealer in Zürich, Zurich, Switzerland

A rare book dealer founded in 1828 as a bookshop, now dealing in valuable books and manuscripts, incunables, landmark titles in the history of science, illustrated works and autographs for an international clientele.

Why FATB discovered it: Member of VEBUKU, the Swiss antiquarian booksellers' association and national member of the International League of Antiquarian Booksellers (ILAB) - VEBUKU / ILAB

Discovery is not verification.