Parcel dime out in pounds and pence? (10)

I believe the answer is:

predecimal

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'pounds and pence?' is the definition.
I can't tell whether this definition defines the answer.

'parcel dime out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'parcel'+'dime'='parceldime'
'parceldime' anagrammed gives 'PREDECIMAL'.

'in' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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