Adams Calyx Ware Singapore Bird Egg Cups, Set Of 4 SOME SLIGHT STAINING AND CRAZING DUE TO AGE. PLEASE EXAMINE PICS AND ASK QUESTIONS BEFORE PURCHASING. Add a touch of elegance to your breakfast table with this set of four Adams Calyx Ware Singapore Bird Egg Cups. The beautiful green color and bird theme make them perfect for all occasions. Made from fine porcelain, these vintage egg cups have a glossy finish and feature a printed backstamp. The set includes four egg cups that are perfect for any bird lover. These egg cups are manufactured in the United Kingdom by the Adams brand. Whether you're starting your day with a boiled egg or serving a fancy brunch, these egg cups will add a touch of sophistication to your table.