Crossword Genius

Mark of quality (9)

Ross

I believe the answer is:

character

I believe this clue is a double definition.

'mark' is the first definition.
(thesaurus)

'quality' is the second definition.
('character' can be a synonym of 'quality')

'of' is the link.

(Other definitions for character that I've seen before include "Letter or number" , "crank" , "I, for example" , "Someone in play" , "Person in a novel or play" .)

I've seen this clue in The Independent.
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