Are all McCoy pottery marked?

McCoy pottery, had no identifying marks at all. Relatively early though, the procedure of marking their wares with a style number was adopted. These solitary numbers were incised into the into the body of the ware.

Do they still make McCoy pottery?

McCoy is a brand of pottery that was produced in the United States in the early 20th century. McCoy Stoneware company, they established the Nelson McCoy Sanitary Stoneware Company in 1910. They continued on almost into 1991, but had to close down due to declining profits.