How much is a 1965 Elizabeth 11 dei gratia Regina fd Gold Coin worth?

"Elizabeth 11 dei gratia Regina fd" (actually "ELIZABETH·II·DEI·GRATIA· REGINA·F:D:") is abbreviated Latin for "Elizabeth the Second, by the Grace of God, Queen and Defender of the Faith").The coin is a British Sovereign (KM# 908) - Half Sovereigns were not minted in that year - which weighs 7.9881 grams and is 91.7% Gold (giving it an Actual Gold Weight - or "AGW" - of 0.2355 troy ounces. The back of the coin depicts St. George slaying the dragon. With gold at US$1,148 per troy ounce as of November 20, 2009, the "melt value" of the coin is about US$270. Numismatically, the coin might be worth a few dollars more than that if it were in particularly nice Uncirculated condition.