### Clue: Flip over king, say, and queen, perhaps on a now obsolete coin (7)
### Answer: DRACHMA 
 ### Explanation: Definition: now obsolete coin
  **Reversal of**(flip over) CARD(in a deck, an example of which,say is the "king") **plus**(and) HM(abbrev. for Her Majesty, the Queen – "perhaps" signifying it could have been His Majesty instead?) ***placed above***(on, in a down clue) A
Defn: Former Greek currency, made obsolete by the euro