Vintage Handmade Ceramic Purple/Cream Drippy Pottery Mug Signed

Vintage Handmade Ceramic Purple/Cream Drippy Pottery Mug Signed. I'm not sure who made it, but it's a beautiful and colorful Mug. The inside has almost an Irridescent rainbow pattern. Please review photos carefully for details on condition, design, and measurements. In excellent condition as shown! Holds approximately 14 fl oz's. A17