Auto-graphed means that something has been signed by its creator or by a famous person. The antonyms for this word would be something that has not been signed or marked in any way. For example, the words unsigned or unmarked could be used to describe an item that has not been auto-graphed. Another antonym could be generic, meaning that the item is not particularly unique or special in any way. Furthermore, the word unauthentic could also work as an antonym, indicating that an individual's signature may not be genuine. Overall, there are many different antonyms for auto-graphed, each representing something that is in contrast to a signature or autograph.