Although 'facsimile' means an exact copy, there can be minor differences from the original. The signature on the facsimile seemed less vibrant than on the original.
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Historical Use
Facsimile is often used regarding historical artifacts to allow people to experience what the original would be like. A facsimile of the ancient map is available for students to examine.
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Physical Objects
The term is usually reserved for tangible reproductions, such as documents, works of art, or even buildings. The architecture firm built a facsimile of the old Roman villa.