In Australia, you have two options to choose from in a general correspondence: 1) if you know the name of the recipient (for example, Mr John Smith), use: Dear Mr Smith ... Yours sincerely 2) if you...
PSA/DNA or JSA.
An autograph that is not authenticated by a creditable company could sell at half the market value or less. Two of the top, and most trusted authenticators are PSA/DNA, and James...