Items, including old sacks (5)

I believe the answer is:

loots

'sacks' is the definition.
(to sack is to loot or pillage)

'items including old' is the wordplay.
'items' becomes 'lots' (items in an auction).
'including' indicates putting letters inside.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'lots' enclosing 'o' is 'LOOTS'.

(Another definition for loots that I've seen is " Steals".)

I've seen this clue in The Times.

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