Expert signature

under construction

An expert signature is a small mark, usually initials or a name on the back of a stamp to indicate that an expert has examined the stamp and has determined it to be genuine. This can be handstamped (in ink) or written in pencil.

It should not be confused with just any scribble or a name or initials on the back of a stamp. Owners once marked the back of their stamps, too. Nor should a number written on the back of stamp be taken as gospel, since catalog numbers have changed over the years and whoever wrote it could just be plain wrong. Plus, as expected, there are forgeries of expert signatures.





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