Antique Blue Glass Nailsea Swirl Witch Witches Ball

Rarely seen early nailsea glass witches ball in a deep blue colour. The opening is tiny but inside it retains its wooden peg to attach the wire holder. Rough pontil mark to opposite side. A couple of tiny marks around the opening and a pinprick body chip maybe from use. No cracks. Length 3.5 inches.English c 1830/40.