On this flight I got a free upgrade to Business Class for being Star Alliance Gold (SAS EuroBonus Gold member). This is very rare in Lufthansa, but maybe due to operational reasons they had to upgrade a few passengers to make room in other cabins (economy / premium economy). When this happens, passengers are sorted based on Elite Status and Sequence Number (check-in order), and maybe I was lucky to be among the first in the list!
Airline: Lufthansa, LH
Aircraft: Boeing 747-8 Intercontinental D-ABYM
Flight Number: LH511
Origin: Buenos Aires Ezeiza (EZE), Argentina
Destination: Frankfurt (FRA), Germany
Date: 31 July 2019