Pair of Brass Dutch Sconces

These pair of sconces take on the look of the Dutch sconce. One of my favourite designs. 

The brass plate acts as a reflector as well as protecting the wall. They were prominent in the 19th Century but I am not quite sure if the age of this as the look of the heart is a little sharper than others you will see elsewhere. In my opinion the act as works of art. 
 
Total height about 46cm / dimensions lower square about 25cm x 23cm.
 
The heart as you can see in the photos is able to be removed.