Wine casks display eccentricity (9)

I believe the answer is:

wackiness

'eccentricity' is the definition.
(thesaurus)

'wine casks display' is the wordplay.
'display' is an anagram indicator (I've seen 'displaying' mean this (the anagrammed letters display the answer)).
'wine'+'casks'='winecasks'
'winecasks' with letters rearranged gives 'WACKINESS'.

I've seen this clue in The Daily Express.

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