| Proofs
are impressions taken from an approved die,
plate or stone in which the design and color are the
same as on the issued stamp. Trial Color Proofs are
impressions taken from approved dies, plates or stones
in varying colors.
Essays are impressions of the design
that differs in some way from the stamp as issued
Illustrated to your left from top to bottom are a Proof
of the 1898 Trans-Mississippi Issue, an Essay
and the Actual Stamp as issued.
You can see that the proof follows the color scheme
of the actual stamp while the essay is of a different
color scheme than the actual stamp.
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