Yes I do have them.
  I hid them in my cockpit as I'm currently on the hard in a boatyard and noticed a couple shady fellows with an interest in bronze.
  I think there is 5-1-1/2" valves and 2-3/4" valves.
  They were in good working order.
  Regarding a value I would have been very happy to pay $50 each plus shipping for the replacement cones alone for use as a spare.
  So, I guess $50 plus shipping each should be my price.
  They are in good shape but still I will only sell them "as is".
  Carl from Key West