I would estimate it could hold at least 4 gallons. You can see that the lid is made by hand, the bottom shows the stilt marks, and the interior shows the characteristic ribbing of a hand thrown piece of pottery. I have done a lot of research, and I'm still not sure of the maker, as it is unmarked.
Has characteristics of Uhl, Zanesville, RRP, Fulper, North Carolina potters, Bybee, Cole, even Illinois potteries. I was not able to find anything else quite like it.The item "Vintage Primitive Rustic Cobalt Butter Churn Crock Stoneware Pottery with Lid" is in sale since Thursday, November 09, 2017. This item is in the category "Antiques\Decorative Arts\Ceramics & Porcelain\Crocks". The seller is "kathy1969" and is located in Northville, Michigan. This item can be shipped to United States.