Selling White Porcelain Lightning Rod Ball

The Rare Bird Antiques an Collectibles is Please of Offer this Fine White Lightning Rod Ball which has a porcelain Body not Glass
This Ball has a White Glaze applied.
Ball is about selling 4 inches in diameter and 4 inches high.
This Ball is in Excellent Condition with No Damage
No Chips
No Cracks
On one end there is a firing crack made during manufacture, see last two pictures
Not an easy item to Find