Crossword Genius

Hope someone has some foreign coin (4)

Ross

I believe the answer is:

peso

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

'foreign coin' is the definition.
'peso' can be an answer for 'coin' (I have seen 'Mexican coin ' mean 'peso' so perhaps 'coin' could also mean 'peso'). I'm unsure of the 'foreign' bit.

'hope someone has some' is the wordplay.
'some' says the answer is hidden in the clue.
'PESO' is hidden in the letters of 'hope someone has'.

Can you help me to learn more?

(Other definitions for peso that I've seen before include "Mexican dollar" , "Currency of Mexico" , "Piece of eight" , "Mexican monetary unit" , "Manuel's fiver" .)

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