Edition
Which edition of the book do you have? Keep it separate from the printing number.
Save a photo of the copyright page with your book. Bookshelf looks for edition and printing information, with the evidence there for you to review.
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Which edition of the book do you have? Keep it separate from the printing number.
A later edition can have a first printing. A “1” in the number line alone does not establish a first edition.
Check each suggestion against the page before applying it. Publisher conventions vary; unconfirmed details can stay blank.

Edition and printing appear beside the other details of your copy, ready to check the next time you find one.
Recognition helps record information. It does not authenticate an edition or signature.