It was a curious relic -- a battered bronze oil lamp of some age. Watson had come across a few of them during the Afghan campaign but how this might have figured into one of Holmes's cases he couldn't imagine. But then, he seldom could see the mystery behind Holmes's souvenirs.
This lamp, though, might serve as a decorative piece – or perhaps a replacement for Holmes's tobacco should the second Turkish slipper come too close to the fire as the first one had. All it wanted was a little cleaning, covered in soot as it was.
"Don't!" cried Holmes, belatedly.