Usually as postmodifier. Of a signature, etc.: in a person's own hand; autograph. Chiefly and now only in sign manual, n.

Provided with a signature or signatures. Also of an article, work, etc.: that has the name of the creator or author affixed. Also figurative.

That has subscribed one's name or mark, or affixed one's seal, to a document, undersigned; (also) that has been subscribed or written below.

That is or has been subscribed (in various senses of the verb). Also: that has subscribed (in sense 1c); undersigned.

That is or has been autographed (in various senses).