What is autography?

As an AI language model, I'm going to assume that you mean "autograph" instead of "autography".

An autograph is a handwritten signature of a person, typically someone famous or notable. Autographs are often collected by fans or admirers as a memento, and can be highly collectible and valuable.

In addition to signatures, autographs can also include personal messages, drawings, or other forms of written communication. Some collectors focus on specific types of autographs, such as sports memorabilia or historical documents.

Authenticating autographs can be difficult and is often done by experts in the field. Factors such as the age of the signature, the type of paper or writing instrument used, and the context in which it was signed are all taken into consideration.