Sadly, bad gang stole container (9,3)

I believe the answer is:

gladstone bag

'container' is the definition.
(Gladstone bag is an example)

'sadly bad gang stole' is the wordplay.
'sadly' indicates an anagram.
'bad'+'gang'+'stole'='badgangstole'
'badgangstole' with letters rearranged gives 'GLADSTONE BAG'.

(Other definitions for gladstone bag that I've seen before include "Small portmanteau" , "Large old portmanteau" , "hand luggage" , "Briefcase-like container" , "case" .)

I've seen this clue in The Times.

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