In the datamined info that was gathered from the benchmark, if I'm not mistaken, both the mog cap and the warrior of light helmet (this one is a CE item) granted a 20% experience bonus if you were under level 10.
SE asked xivdb to remove the datamined info though, so no way to check it now.
Current: FFXIV | EVE Online (again)
Former: FFXI | The Matrix Online (FOREVER!!!) | STO | SW:TOR | EQ2 | WoW | Florensia | RF Online
FFXI :: Valefor :: Dareknight, Darexius
FFXIV :: Valefor :: Dare Knight
EVE Online :: Dare Knight, Hazel Knight, Rex Knight