We have a wood finial with a round on top.  It measures about 5 3/4" from the top of the ball to the bottom of the wood extension x about 1 1/2" square on the bottom extension.  The molding widens above the extension to about 2 1/4" square with the ball on top being about 1 3/4" in H x about 4 7/8" with a tape measure wrapped around the widest point.    There is an indentation (chipped piece of wood on the ball) and a few chips on the wood detail below.  2 sides of the extension are unfinished with nails sticking out.  The overall finish is in fair condition.

Wood Finial Vintage Salvage