Lost Skeleton key.

Hi, I recently noticed my key to Scholomance is gone. (called the skeleton key.) And I can't seem to find it in my keyring, bags, bank, or bank slot bags.

The Keymaster acheivment says I've obtain this key and none of the quest givers that are involved with getting the skeleton key will give me a new key.

I was told that blacksmiths will replace keys from quest but I've spoken to blacksmiths, blacksmith trainers, and blacksmith suppliers. None of which offer me a new key.

I know there is a chance I simply misplaced it but for all the searching I've done I cannot find it.

So I was wondering if a GM could perhaps tell me how/where to get a new key, or simply point me in the direction of the bag I might've over-looked.

I would appreciate it, blowing up the door with seaforium or jumping off the roof to die can start to be a bother after awhile. :)