Clue: Banking centre, say, raised what's held in Russian banks (6)
Answer: GENEVA
Explanation: Definition: Banking centre
 **Reversal of**(…, raised, in a down clue) EG(abbrev. for "exempli gratia"/for example/say) + NEVA(a river in Russia/what is held within river banks in Russia).
Defn: …/a financial centre in Switzerland.