Pair of antique crystal knobs in a brass base.  The crystal knobs are in excellent condition, no scratches, cracks, chips, or gouges.  Their brass bases are also in great condition in that there are no dents or dings.  But there is old paint stuck to both brass bases.

The spindle and knobs are threaded, and they have their set screws. The threaded spindle has some rust on it. 

When the set screws are removed, one knob is able to be unthreaded from the spindle. But the other knob remains attached. 

Each knob is approximately 2" in diameter.