Schumann Demitasse Saucer

It measures approximately 4 1/2" across. I've spent countless hours surfing the internet trying to find this pattern, but have not been able to. It reminds of Limoges. There are no chips, cracks or breaks. I do not see any loss of paint, however, I am sure there has to be a bit of loss due to age. I will be glad to take additional photographs to help anyone identify this pattern. I need your zip code to calculate the postage.