So, after days of trying opening the ridiculous hidden chest with each of my five characters, last night I finally got the rare skeleton horse/pony that I had been looking for.  Not only one, but two of my characters hit it big all within a few minutes of each other.  Luckily, they are the two characters I have been using the most recently, so at least that worked out.  Would still like to get one for my main though.  Not going to hold my breath just in case.  Anyway, the picture is of my Dwarf, Loghorn, a level 21 guardian.  My Rune Keeper also pulled down the rare drop as well.  Good times.  Really though, it was about time.  I know I haven't farmed that chest as much as some people have on the official forums, but it's still nice to get a rare drop like this from time to time, especially since it's one of the cooler looking mounts available in the game, in my opinion at least.  LOTRO doesn't usually get into the strange and exotic mounts that are sometimes found in other games.