Excellent sleuthing Dynamitenato24 !! Glad to have some help on it !!

I think I cracked this one for you. The words on the top and bottom are Superior : Quality, and the word running across the middle is warranted.

https://kovels.com/marks/pottery-porcelain-marks/circle-or-oval.html?eid=9144
http://gaukartifact.com/wp-content/uploads/2013/03/item_2409948.jpg
http://gaukartifact.com/2013/03/05/rare-watercolour-of-wedgwood-etruria-works/

How did you come by this small piece of pottery ?? What is your location ??
Is it impressed or raised ?? I see some dark areas at the edge are they part of the pattern ?? Are they dark blue ??