Returned tender token of love (4)

I believe the answer is:

eros

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'token of love' is the definition.
'Eros' can be an answer for 'love' (Greek god of love). I'm not sure about the 'token of' bit.

'returned tender' is the wordplay.
'returned' is a reversal indicator.
'tender' becomes 'sore' (synonyms).
'sore' in reverse letter order is 'EROS'.

Can you help me to learn more?

(Other definitions for eros that I've seen before include "Form of love" , "God of love - example of 1 down" , "Love-god's statue in Piccadilly" , "capital statue" , "One worshipped" .)

I've seen this clue in The Globe and Mail.

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