Awesome, that is EXACTLY what I needed to know to help you properly! The firm of Myott, Son & Co. Limited, established in 1898, was based in the Staffordshire Potteries region of England and operated in one form or another for about 93 years. They employed premier designers such as Clarice Cliff and Susie Cooper and produced both elegant and high quality goods.
You have one of their wares from the Art Deco era (around 1920). The pattern was commonly called "Hashes", as with this item:
It is not quite antique yet, as "antique" means 100 years or older, but it is getting very close! It would be classified as "vintage" or "collectible" at this point in time and the typical retail would be (assuming no damage) from $45 to $75 to a collector.
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