Capital in the bank? A rarity (6)

I believe the answer is:

ankara

'capital' is the definition.
(Ankara is an example)

'in the bank? a rarity' is the wordplay.
'in' indicates the answer is hidden within the clue.
'ANKARA' is hidden in the letters of 'bank a rarity'.

(Other definitions for ankara that I've seen before include "Turkish city" , "European capital" , "Capital city" , "Capital of Turkey" , "Capital of 8 across" .)

I've seen this clue in The Telegraph.

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