The signature of the Swiss philosopher, author, poet, and painter Frithjof Schuon (1907-1998)
Frithjof Schuon's signature appears in a number of books from the publisher of his books in English, World Wisdom Books, and on the website (also maintained by World Wisdom), http://www.frithjofschuon.com/english/home.aspx. World Wisdom has kindly approved the use of the image of his signature on WikiMedia Commons.
Frithjof Schuon