Most pieces of Watt Pottery ovenware are well marked. The Watt Pottery marks are large, often covering the entire bottom of the piece. The pottery markings usually consist of one or more concentric rings deeply impressed into the bottom of the pottery. The words, Watt and Oven Ware U.S.A. are impressed as well, although some pieces have only one phrase, not both. Classic Watt Pottery patterns often feature a script Watt with no circles. Most pieces also have the mold number impressed in the center, making identification easy. The most significant pieces which were not marked are the ice bucket in all patterns, salt and pepper shakers, and the Watt Pottery Apple dinner plates. But, all this being said, you must be a bit careful with the introduction of fake Watt Pottery. Some of the reproductions are also including some markings on the bottom and they are trying to match the authentic pieces the best they can. I have actually acquired the reproduction Watt Pottery Policeman, Watt Pottery number 15 rooster pitcher, and some reproducton number 63 Mexican bowls. How could you not fall in love with this beautiful old time pottery from the past.
With this being said, just remember that not all Watt Pottery marks are placed on all of the pieces. The markings varied over the years and sometimes it is difficult to date pieces by their bottom marks. Because the Watt Pottery Company produced many lines of pottery for other companies, these pieces in many cases will either bear the company name or a product line on the bottom.