Pair of antique Napoleon III French ormolu gilt on bronze curtain hold backs. 

They are heavy weight and of good quality casting, detailed with the most elegant swags and flourishes. 
I have left the patina intact, just wiping with a soft cloth, although they would polish if required. There are some small areas of verdigris which add to their authenticity and charm. One hook is at a slightly different angle to the other but this is not easy to  notice, especially when hung with curtains. 
The bases, where they attach to the wall measure 16cm or 8.25" and they stand out approximately 12cm 4.75" from the wall. 

Antique from 1800s ormolu curtain holdbacks