Proofs

There are several different, and equally valid, definitions for Proofs. Here is one definition that is frequently used:
Proofs are impressions made with a new stamp die for the purpose of inspecting the clarity, definition, and quality of the new die. Multiple proofs can be made, one for each color that will be used for the intended stamp, and each impression is carefully inspected for line clarity and definition, ink coverage, and overall quality.

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