I have been United Mileage Plus Gold for the last 15 years. When I was flying Lufthansa (and other Star Alliance airlines) that meant an extra free piece of luggage in addition to the normal allowance. Recently Lufthansa introduced "new Europe fares":
https://www.lufthansa.com/online/por...il_lhcom_RU_RU
If I buy "Economy Light" ticket for flying within Europe, as United/Star Alliance Gold how many free pieces of luggage will I be able to take?