A proof banknote[1] is one that is printed to test the printing plates to see if it is suitable or not for putting into full production.

A reason a proof banknote may be rejected is the colour is not suitable for one reason or other reasons.

Another reason a proof banknote may be rejected is due to the design itself being unsuitable for one reason or other reasons.

See also

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References

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  1. ^ "The American Paper Money Collection with 36 unique proof banknotes pri". store.thehistorylist.com. Retrieved 18 October 2025.