These were stored in in covered containers so they have not been subjected to sunlight. Below is information I found on internet about this pattern.
Wedgwood "Runnymede Blue" Bone China Vintage Discontinued. Description: Dark Blue Band, Pink Shells, Floral Center. Pattern: Runnymede Blue by Wedgwood. Wedgwood Runnymede-Blue bone china is the perfect way to add an extra touch of elegance to your table!
The "Runnymede" in the pattern's name refers to the location where King John signed the Magna Carta, and the clamshell design is an example of Josiah Wedgwood's fascination with mollusk shells. The item "Wedgwood RUNNYMEDE BLUE Set 6 Footed Cups Saucers Container China England" is in sale since Wednesday, October 9, 2019.This item is in the category "Pottery & Glass\Pottery & China\China & Dinnerware\Wedgwood". The seller is "memorylane14" and is located in Anna, Illinois. 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, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay, Russian federation.