Model a clipper badly, lacking front of prow (7)

I believe the answer is:

replica

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'model' is the definition.
(a model is a replica of something else)

I don't understand how the rest of the clue works.

(Other definitions for replica that I've seen before include "Parcel I used to contain exact copy" , "Facsimile" , "Exact copy as of sport trophy" , "Duplicate" , "Parcel I made into an exact copy" .)

I've seen this clue in The Daily Express.

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