I've had this piece for years and I know of 4 others in existance but it's not in the Porcelain Value guide. It is a U-472 marked Findlay-194 only the N is backwards. Guess they didn't like that letter. All the ones I've seen are yellow and this marking style. My piece did come from the Findlay insulator dump from a collector years ago. Glad it found it's way out of there.