Identify Royal Winton antique pottery by locating an authentic backstamp or by looking for Royal Winton's famous chintz patterns: tight flower designs that cover the outside of the pottery, sometimes painted by hand and other times attached as decals. You can also use backstamps to determine the decade in which the pottery was made, as these marks have been used and periodically altered ever since the early 1900s.
The unique marks that identify Royal Winton pottery include the backstamp or the large letter "R" in a circle. Royal Winton backstamps include Atlas supporting a globe that says Grimwades, used from 1910-1930; a globe wrapped in a ribbon that says "Winton" with a crown overhead, used in the 1920s; globes with a Grimwades strap that say either "Stoke On Trent" or "England," used in the 1930s, and a round art deco mark that spells out "Royal Winton" in a circle that enwraps the words "Grimwades Made in England," used in 1934. A drawn circle that shows the words "Royal Winton" and "Grimwades LTD. Made in England" within the circle help to identify pieces made from 1995 onward.
Another popular Royal Winton collectible is Cottage Ware, which consists of teapots and table accessories that look like English cottages.