1. Compare it to known samples.
Compare the signature and handwriting on the document
in question to known, authenticated Elvis Presley
signatures. Pay attention to characteristics such as
letter formation, size and slant angle.
2. Check the provenance of the item.
Where did the signed piece of memorabilia come from? A reputable source
or dealer, or unknown third party can impact legitimacy.
3. Consider the materials used. Elvis rarely signed photographs of
himself ( he usually sent the standard publicity prints
with autopenned copies. Check if signatures
match known eras when autopen wasn't used
(like very earliest and his military phase.). If the Elvis signature seems odd on a typical promotional
photo sent to fans the chances are high its not authentic. .
4. Seek expert validation. If still doubtful about the veracity of a document, submit it for
a third party opinion by experts or reputable signature authenticators.