Remarkable money brought back in notes (5)

I believe the answer is:

memos

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'notes' is the definition.
(memo is a kind of note)

I can't explain the rest of the clue.

(Other definitions for memos that I've seen before include "Inter-office notes" , "Written notes" , "Short notes" , "Records" .)

I've seen this clue in The Times and The Sunday Times.

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