This orange luster ware cup and saucer dates from around 1900. GDA stands for Gerard, Dufraisseix & Abbott. The inside of the cup is white luster ware. Both cup and saucer have black painted rims and also the handle of the cup. The cup has the GDA France green stamp and the saucer is lightly stamped Made In Japan. They both have the artist's initials SH in black. The saucer measures 5 1/8" in diameter. The cup has an opening diameter of 3 3/8" and a height of 1 7/8". Very nice condition.