This listing is for a vintage floor lamp top socket & shade holder... with brass bottom cover piece.  It measures 5" long... 2 7/8" across shade area... and measures 1/2" across the threaded hole on bottom where it fits onto a threaded rod.  There are scuffs and scratches on this.  The paint is worn off in places.  It needs rewired.  The socket looks to have been replaced at some point in time.  The socket takes the larger base bulbs than normal household.  The switch turns fine.  I thought someone might be able to use it.  This is from a nice estate.  Thanks for looking!