Money trimmed, small figure (3)

I believe the answer is:

one

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

'small figure' is the definition.
'one' can be an answer for 'figure' (a numerical figure). I am not sure about the 'small' bit.

'money trimmed' is the wordplay.
'trimmed' says the answer is hidden in the clue (part of the clue must be trimmed away).
'ONE' is hidden within 'money'.

Can you help me to learn more?

(Other definitions for one that I've seen before include "Ace" , "Sole; identical" , "Unit" , "Single, sole" , "This is singular" .)

I've seen this clue in The Times.

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