Hoover Aquamaster Wet/Dry Vacuum Cleaner (Mynydd LLandegai LL57)

Working condition - but head of carpet sweep accessory rusted, so only good for spot/localised wet-dry cleaning or for parts?
Vacuum bag for non-wet cleaning inside.
(Have wiped it down, but it's a bit grubby on the outside; found in cupboard - it had been there for a long time!)