I have a brass wall light.  It will not stick to a magnet.  It has some tarnish all over.  It measures about 4 1/2" across the back cone opening with the cone extending about 2 3/4" and then the narrower bar which has a drop down for the globe which adds another 3 3/4" to the width (total from back of cone to ball on opposing side is about 6 3/4" with the drop being about 1 5/8".  It is in need of refurbishment as this is just the shell of the light.  I would consider it in fair condition.

Wall Light Brass Vintage Salvage