
found this reveiw:
http://www.canyonchasers.net/reviews/accessories/napoleon.php
and decided to order one. I got the chrome finish. I think these type mirrors were common fare a few decades back. I recall seeing them around. Not so much any more.
Anyway. the upshot is I got one from an Ebay vender for $31. Mounted it up yesterday and took it for a spin. The difference is amazing. Though not vibration free, the road behind is now visible and I can even tell what kind of car is behind me! I'm not affiliated with Napoleon, just passing on info. The model it appears is called "The Barron". They are made in Japan but don't have any flashy logos that detract from the period look I would like to keep on my Duke.
Mike