I found these two items at a thrift shop - the teacup has RS Prussia markings and the saucer has RS Germany markings. They are both very light and they are not opaque (they let light through). I don't know if they are real or fake or how much they are worth. There is no date on them either. They are off-white with an orange rose detail and some gold edging as well. No chips or scratches.
Ceramics and Porcelains
RS Prussia and RS Germany