Vintage "Hull" like Brown Drip Glaze Pottery Tea Pot - Ridged Shape Design

Here I have a lovely brown drip teapot that will hold approximately 14 ounces. It is in good vintage condition and I am unsure whether the inside lip contains a chip or is it present intentionally for easy placement of the lid (see photos). It is rough to the touch and not glazed over. Either way, this attractive teapot is still quite usable. The colours are rich and the "pumpkin" shape indents give it nice character. No maker's mark on the underside. Tea Pot is 8 inches from spout to handle. 5 1/2 inches tall with lid and 4 1/4 inches without.