Bronx Cocktail

1 1/2oz. Gin
1/2 oz. Sweet Vermouth
1/2 oz. Dry Vermouth
2 oz.Orange Juice
dash Angostura Bitters
Orange Slice for garnish
Combine ingredients (except the orange slice) together in a shaker with ice.
Shake well. Strain into a cocktail glass, or over ice in an old fashion glass.