Instructions
Examine the dust jacket or spine of the book. If the publisher is not listed as "Chilton", the book is not a first edition.
Examine the dust jacket again. If the words "Book of the Month" are located anywhere on the jacket, the book is not a first edition.
Open "Dune" to the page immediately before the title page. If the book is a first edition, you will find either the words "First Edition" printed on the reverse of the title page, or you will find a sequence of numbers starting with "1" and ending in "10." If neither of these indicators are present, you are not in possession of a first edition "Dune."