Zanesville Stoneware Company, (ZSC), Zanesville, Ohio. In business from 1887-2002. The older stoneware, (1960's and earlier), is very collectible and sought after. Much of it is not marked, but most of it, especially earlier pieces, are very heavy, have thin runny glaze, distinctive yellowish clay on the bottom, and pinpops in the glaze. You can view the few marks that were used in J. Ran's book. According to the book on Zanesville pottery, this company did not like to mark their pottery because imported pottery had to be marked with the country of origin, therefore, Zanesville felt it was not necessary to mark their pottery since it was American made. Great to use indoors or out, and it fits just about any decor including modern! PS: The President of the Zanesville Pottery Co., K.L. Castor, (ZPC, not ZSC,) contacted me to say that ZSC is out of business, however, ZPC is in business. All of the items I have for sale are ZSC items.
--Zanesville Stoneware Company Identification & Value Guide by Jon Rans, 2002. This book shows the few marks that Zanesville used on their items as well as many of the items they made, and has old catalog pages. Zanesville is very easy to identify whether marked or not once you become familiar with it.