Als Reduced Sugar Vasilopita

Name: Al's Reduced Sugar Vasilopita
Ingredients: 175 g butter, softened; 1 cup brown sugar; 4 eggs; 3 cups cake flour, Self raising; vanilla essence; 1⁄2 teaspoon cinnamon; 1⁄3 teaspoon ground cloves; 1 1⁄2 teaspoons baking powder; 1⁄2 teaspoon salt; 2⁄3 cup orange juice; 1⁄2 cup cognac; 1 tablespoon orange zest; 1 cup walnuts, chopped; 1 clean washed coin wrapped tightly in aluminum foil; 2 tablespoons icing sugar, topping