Bulk magnesium metal rod, about 1.25" diameter. No idea where it's from or what it was used for, but it burns nicely in shaving form. This one was purchased from eBay in May 2002.
Ed Pegg and I spent an entertaining evening burning about 6 inches of one of these bars in two three inch sections.
Click on the story book icon for this sample to see a bunch of pictures of burning magnesium rod. It's not what you expect.
Source: eBay seller magman1000
Contributor: Theodore Gray
Acquired: 29 May, 2002