Mocking private constructors

public class Coupon
{

        private string _couponName;

        private Coupon()
        {
             ...
        }

        public static Coupon Create(IDataElephant elephant, string couponName)
        {
            Coupon coupon = new Coupon();
            coupon._couponName = couponName;
            elephant.Save(coupon);
            Check.Ensure(coupon.ID != 0);
            return coupon;
        }
}

        internal static void ExpectCreateCoupon(IDataElephant elephant, string couponName)
        {
            int id = GenerateUniqueID();
            using (RecordExpectations recorder = RecorderManager.StartRecording())
            {
                // This is the troublemaking line of code. 
                // The construcor is private and can't be called here.
                Coupon createdCoupon = new Coupon(); // <<< Alternative needed!
                recorder.CallOriginal();

                elephant.Save(createdCoupon);

                // Save would normally give createdCoupon an id, but since that's mocked:
                recorder.VerifyMode = VerifyMode.PassIfNotCalled;
                recorder.ExpectAndReturn(createdCoupon.ID, id).RepeatAlways();
                recorder.VerifyMode = VerifyMode.Normal;

                recorder.CheckArguments();
            }
        }