No markings no nothing that I can distinguish. Sorry for the photo but what I can tell you is that the ball unit that wraps around the center stainless fitting also has the chain pull tip embedded in it with which to turn on the light. (If that makes any sense.)
Any remote idea what era this is from or who might have had a hand in designing it? Merci.
http://www.flickr.com/photos/badgurl/5356120536/
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