Someone else in another thread called the medal a 'necklace', that's the 4-torch triumph reward so it's probably that. It has a ribbon and can be worn around the neck, and there are only two GG store rewards (tankard and medal) so what else could it be? You're on 4/6 for the triumph also - even if you haven't lit 4 torches, the whole thing with Eva's packages have caused people to be one or two ahead. That's including me, I'm actually on 5/6 right now which should be impossible in wk2, and I haven't even lit the second platinum torch this week, that'll finish the triumph for me prematurely.