While we don't have this exact sconce, we have a few fixtures that have a similar look. I'm attaching some images for you to compare, all of these sconces come with multiple finish options.
Check out our vintage sconce category to see more: http://www.barnlightelectric.com/wall-sconce-lighting/vintage-wall-sconces/

http://www.restorationhardware.com/catalog/product/product.jsp?productId=prod2460588&categoryId=cat1701019