For the most part, a Last Will & Testament would not necessarily be rendered invalid if there was no date on the document.
The validity of a Last Will and Testament that is not dated depends upon the state in which the Last Will & Testament is being probated and what the state or local probate court requirements are to create a valid Last Will & Testament.
But in such a case, the witnesses who signed the Will may have to swear or provide testimony in Probate Court that the Last Will & Testament was executed before the testator died.
The lack of a date on the document could make for a potentially complex process if someone wishes to challenge the validity of the Will document. If the Will is contested, we highly suggest you find a local attorney to help with the probate process; you can find a local attorney for FREE at Standard Legal’s Attorney Find page.