There is also an N at the top. I believe this is an older Shelley cup and saucer set because there is no registered number as I have seen on other cups. The cup measures 4 1/2" in diameter and 2 1/8" high. The saucer is 5 3/4 in diameter. This has only been displayed.
I have looked this over and ran my fingers around it and can see no chips, cracks, or crazing. The item "Shelley Fine Bone China England Pale Blue Primrose Chintz Tea Cup & Saucer" is in sale since Monday, July 22, 2019. This item is in the category "Pottery & Glass\Pottery & China\China & Dinnerware\Shelley". The seller is "milo330" and is located in Briarcliff Manor, New York.This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Sri lanka, Uruguay, Russian federation.