The cricket trophy, but not to be seen (5)

I believe the answer is:

ashes

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'the cricket trophy' is the definition.
(I've seen this before)

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

Can you help me to learn more?

(Other definitions for ashes that I've seen before include "Remains from a cremation" , "Cinders - which were once kept in the 3 20 at 18" , "Test-match trophy" , "Cricket honour in the fire" , "Former Wimbledon champion's" .)

I've seen this clue in the Evening Standard.

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