there is a bug with the reward boxes you get from side quests in big battles. Please read and hold onto your boxes until out of the instance... or until the next patch up15.1 due soon.
All the loot in the boxes scale to your level. The reason you got a lvl 95 symbol is because there is an issue with the Helm's Deep BB instances thinking you are lvl 95 when you are in it. So when you open a loot box when inside a Helm's Deep BB, it will act like you are lvl 95 and scale the items to that level. My kin found last night any loot boxes opened in the BB will reward you with lvl 95 items, while those openned outside will reward you with lvl 100 items.
So as a word of warning, open your reward boxes outside of the BB instances you run to get the properly scaled items till this is fixed.