You're absolutely right, Fil. The gilt makes it look gold, but it's made of silver.
"Men Single's trophy is presented to the winner of Gentlemen's Singles Championship. It is a silver gilt cup
, with cover. It is 18½ inches in size and has a diameter of 7½ inches. It consists of couple of handles on all the sides and is settled on a raised foot. It is golden in color
and adorned with borders and floral work and oval style moldings. The head of the Cup is given a look of a pineapple on the top. The head is also covered with a helmet that is present under both the handles. The proud words 'The All England Lawn Tennis Club Single Handed Championship of the World' are engraved on the trophy. However since 1949, players have been given a miniature replica of the original trophy."