Boast new coronation headgear (5)

I believe the answer is:

crown

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'coronation headgear' is the definition.
'crown' can be an answer for 'headgear' (crown is a kind of headgear). I am unsure of the 'coronation' bit.

'boast new' is the wordplay.
'boast' becomes 'crow' (to crow about something is to boast about it).
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'crow'+'n'='CROWN'

Can you help me to learn more?

(Other definitions for crown that I've seen before include "Coin; royal headgear" , "King" , "The sovereign" , "Monarch's headgear" , "peak" .)

I've seen this clue in The Times.

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