After quick search on the Wiki and a lookthrough in the Construction set, I'm sure it doesn't exist.
Most likely a mod you have downloaded.
Is it a potion, or is it a misc item?
It's just a misc zero weight item. It's worth some gold (~250) but when you've got half a millie, gold doesn't really matter.
I'm wondering if it's in TIE. That's the only mod I'm using that adds items, I think...
Edit - Here's a pic http://img.photobucket.com/albums/v514/alceryes/ScreenShot1.jpg.