Faces a sextet of elders (7)

I believe the answer is:

visages

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'faces' is the definition.
(visage is a kind of face)

'a sextet of elders' is the wordplay.
'a sextet' becomes 'VI' ('VI' can be a synonym of 'sextet').
'of elders' becomes 'sages' (I can't explain this - if you can you should believe this answer much more).
'vi'+'sages'='VISAGES'

Can you help me to learn more?

(Other definitions for visages that I've seen before include "Human faces" , "Appearances" .)

I've seen this clue in the Evening Standard.

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