I have 2 cast iron candle holders.  They are vintage.  They are a silver color (I believe original paint) with rust showing through on both.  They measure about 5" in W x about 3 3/4" in height x about 2 1/4" in D on the decorative piece below the actual candle holder.  The opening to hold a candle measures about 7/8" across.  They were made to fit into a base by slipping the attached 3/4" pin into the holder.  With a vintage patina they are in nice condition.  There is 1 spot identical on both in the back on top of the swirl where I wondered if there was something broken off but it is identical on both and I think this was in manufacturing more than something broken off......