Kidney Table How Do I Find Out The Value Of My Widdicomb, TH Robsjohn-Gibbings Designed Kidney Table?

How do I find out the value of my Widdicomb, TH Robsjohn-Gibbings designed kidney table? - kidney table

The table is wood, with 3 feet of brass. It is the seal 1 / 53 and has a bronze seal of the true Grand Rapids W-40236 on it.