Most Watt Pottery marks are impressed on the bottom and contain the words, Oven Ware USA.  Many earlier Watt Pottery pieces were simply marked Watt or Watt USA and even used cursive style of lettering.

	Vintage WATT Ovenware BOWL Cherry Cherries 05 USA $14.99 (0 Bids) Time Left: 12h 6m
	Watt USA Spaghetti pasta bowl FLORAL "Rio Rose" $9.99 (0 Bids) Time Left: 3d 13h 35m
	Nice Mint Watt Pottery Floral Creamer USA 15 on Base $9.49 (5 Bids) Time Left: 3d 21h 56m
	HUGE WATT 31 PLATTER POTTERY FLOWER LEAF PLATE USA NICE $49.99 (0 Bids) Time Left: 4d 20h 42m
	xx-USA YELLOW WARE MIXING BOWL PINK BLUE BANDS #12 $24.99 Time Left: 5d 8m
	WATT POTTERY PITCHER ROOSTER #15 USA $9.99 (0 Bids) Time Left: 5d 43m
	Watt USA DoubleTulip Creamer Mold #62 $9.95 (0 Bids) Time Left: 5d 20h 46m