 The college 's collection of silverware includes a silver @-@ gilt punch bowl , presented by Sir Watkin Williams @-@ Wynn in 1732 . The bowl , which weighs more than 200 ounces ( 5 @.@ 7 kg ) and holds 10 imperial gallons ( 45 L ) , was used at a dinner held in the Radcliffe Camera in 1814 , to celebrate what was supposed to be the final defeat of Napoleon . Those present at the dinner included the Tsar , the King of Prussia , Blücher , Metternich , the Prince Regent , the Duke of York and the Duke of Wellington . There is a college tradition that the bowl will be presented to anyone who can meet two challenges . The first is to put arms around the bowl at its widest point ; the second is to drain the bowl of strong punch . The bowl measures 5 feet 2 inches ( 1 @.@ 57 m ) at its widest point , and so the first challenge has only been accomplished rarely ; the second challenge has not been met . 
