Legal analysis: invalid. A self-made will is written and signed by the testator, indicating the year, month and day. It is not difficult to see from the legal provisions that signature is a necessary condition for the validity of a self-written will. Therefore, an unsigned will is invalid.

Legal basis: Article 133 of the Civil Code of People's Republic of China (PRC). A natural person may make a will and dispose of personal property in accordance with the provisions of this law, and may appoint an executor.

A natural person may make a will to designate personal property to be inherited by one or more legal heirs.

A natural person may make a will to donate personal property to an organization or individual other than the state, the collective or the legal heir.

A natural person may establish a testamentary trust according to law.