This item is a Mun Shou porcelain longevity tea cup saucer, identifiable by its yellow glaze and auspicious symbols. 

• Design: Features four Chinese characters representing "boundless longevity" (万寿无疆) arranged around the center bowl. 

• Pattern: Decorated with stylized flowers and other auspicious motifs, typically in red, pink, and turquoise colors. 

• Usage: Traditionally part of a Gaiwan set