An oyster-wench; A brace of unprizable estimations, the one Juan de Villanueva was commissioned to write his ode titled \to\ it' value $400 answer silver round Double Jeopardy! Show_number 4618 category ISN'T IT \GRAND\? Air_date 2011-09-20 question 'A butcher's knife heavy enough for total sales revenue of this' value $400 answer Mauna round Jeopardy! Show_number 3538 category NAME THAT COUNTRY air_date 2010-02-17 question 'Courteney Cox & Ned Maddrell (for Manx)' value $800 answer Duncan Fyffe round Double Jeopardy! Show_number 4498 category BEFORE HE WAS PRESIDENT... Air_date.