A category in the classification of organisms, ranking below regnum and above classis.
An individual instance that represents a class; an example.
An eligible man.
A banknote printed for distribution to central banks to aid in the recognition of banknotes from a country other than their own
A sample, especially one used for diagnostic analysis.
A postage stamp sent to postmasters and postal administrations so that they are able to identify valid stamps and to avoid forgeries