Help with an Earthenware Stoneware Bowl with B mark - Barbara Shaw?

This came in a job lot of mostly Glass that i purchased recently.

This bowl pings when flicked with a pencil and feels rustic and well made, reddish salt glaze type.

Three feet under and a spiral finish to the base with what looks like a number 8?

Any ideas would be greatly appreciated.

Thank you.

Thank you. The B on the bot looks more rustic and not so dined as your image.

Really appreciate the input.

The bowl does look to have some age but the underside looks very unusual and not something that I recall seeing.

Thank you!

Thank you so much.

Mike