The points of issue
Putnam US hardcover with a full number line ending in 1. Viking UK hardcover also dated 1996, with the number 1 present in the impression line.
Is this the true first?
US Putnam (published 9 September 1996) precedes the UK Viking hardcover (early October 1996); the US Putnam is the true first edition. Bridge trilogy volume 2.
Telling it from reprints & book-club editions
A Science Fiction Book Club issue exists, distinguished by the gutter dot and absence of a printed jacket price.
Frequently asked questions
Is my copy of Idoru a first edition?
Look for these first-edition points: Putnam US hardcover with a full number line ending in 1. Viking UK hardcover also dated 1996, with the number 1 present in the impression line.
How do I tell the first printing from a later one?
Check the copyright page for the publisher's first-printing convention and confirm the points above. US Putnam (published 9 September 1996) precedes the UK Viking hardcover (early October 1996); the US Putnam is the true first edition. Bridge trilogy volume 2.
Is the book-club edition the same as the first?
A Science Fiction Book Club issue exists, distinguished by the gutter dot and absence of a printed jacket price.
I have a first edition of Idoru — what should I do?
If you're clearing books, New Mexico Literacy Project offers free pickup in Albuquerque, any condition, and makes sure collectible copies aren't lost. To sell, see the author's collecting guide. Either way, nothing valuable ends up in a landfill.