noun
signed book; autographed book
Refers to a book that has been personally signed by the author, often sold as a limited edition or obtained at a signing event.
この書店では、発売日にサイン本を先着で販売します。
This bookstore will sell signed copies on a first-come, first-served basis on the release day.
彼は好きな作家のサイン本を何冊も持っている。
He owns many signed books by his favorite authors.