With an electric mixer on high speed in a separate bowl, beat eggs with sugar until thick and pale. Stir in the vanilla, cinnamon, nutmeg, butter and raisins to the egg mixture. Add the soaked bread crumbs to the egg mixture and stir well. Let stand for 10 minutes. It is important to allow enough time for the bread to absorb the egg mixture or the bread crumbs will float to the top during baking, leaving a layer of custard on the bottom of the dish.