First American edition, first printing. Signed by Luigi Serafini and inscribed on the first page to former owners followed by a brief inscription in Serafini's imaginary language. Bound in publisher's black cloth lettered in gilt at the spine and blind stamped on the upper board. Near Fine with lean to binding, bumped corners with accompanying textblock crease; light toning to contents. In a Near Fine unclipped dust jacket with light edge wear and small areas of retouching to color at corners. An illustrated encyclopedia of an imaginary world written in an imaginary language, created by Italian artist, architect and industrial designer Luigi Serafini. Signed copies of the trade edition are scarce.