Crossword Genius

Nineteen bob perhaps a bit dopey (3,3,4,4)

Ross

I believe the answer is:

not the full quid

I'm a little stuck... Click here to teach me more about this clue!

'nineteen bob' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'a bit dopey' is the wordplay.
I cannot really understand how this works, but
'bit' could be 'quid' (quid is a kind of bit) and 'quid' is found in the answer.
This explanation may well be incorrect...

'perhaps' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
Want a hint initially instead of a full solution? Install my app