Cup diameter: approximately 6.5cm Saucer diameter: approximately 11.5cm Demitasse cup & saucer set, believed to be YS (Yau Shing) Set of 4 Researching "Yau Shing" reveals much mystery. Possible countries of origin include China, Japan, Russia, Czech Republic, and Armenia, spanning a wide range. The spelling "Yau Shing" suggests China, but the katakana "ヤオシン" (Yao Shin) hints at Japan. Some backstamps include "Japan," while others say "Bavaria Design Germany." The floral patterns certainly resemble German painting styles. Despite the many mysteries, the products appear to be from around the 1950s. There are no cracks, chips, or breaks. The gold trim is beautiful. One saucer has two kiln marks on the back. Please check the photos. It's also interesting that the floral patterns on the saucers are slightly different. They are in very good condition, but they are used items (inspected by an amateur). Please refrain from individual price reductions.