SPECIMEN

In biology, a 'specimen' is an individual animal, plant or microorganism used as a representative to study the properties of the whole population of that species.
In handwriting recognition, forensic handwriting analysis and signature verification, the term 'sample' refers to a specimen of handwriting.
In a medical laboratory, a specimen is a sample taken from a patient, most frequently blood or urine.
Central Banks send so-called ''specimen banknotes'' (or ''specimens'') to other banks before issuing a new banknote. To avoid its use as a legal tender note the banknote is perforated or punched, given a serial number of 000000 (all zeroes), or is overprinted with the word "Specimen" or "Cancelled" in any language.

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★ Picture gallery of specimen banknotes