Would like to know about this Speckled Ceramic Pottery Bowl. The bowl was signed with the initials; NA. I don’t know if my eyes are deceiving me, or not, but it looks like lettering is carved into the bottom of the bowl. The bowl has brown and gray speckles with dark blue dripping around the inner rim of the bowl.
My questions:
Who is the Artist?
Is this Ceramic, Pottery?
Is there any value to the bowl, and if so, how much.

Thank you for your time.