I think this is marvelous.
There are very few (if any) AM3 photographers in my mind that do low/ natural light images as well as you.
This shot and others like it is why I subscribe to your site.
I recently went to a movie titled "The Good German" made in 2006 which was filmed in black and white using 1940s lighting techniques and lenses. This reminds me of it. If you are interested Ccheck out the photo part of the Wikipedia definition of chirasoro. http://en.wikipedia.org/wiki/Chiaroscuro