Imperial Russian Porcelain set cup , saucer and plate . Period of Nicholas I . Blue NI mark underside of saucer and plate . The cup apparently unmarked . Also all 3 with red numbers underside 1729 . Size : Cup 2 3/4" ( 7 cm ) H , 4 3/8" ( 11 cm ) D , Saucer 6 7/8" ( 17,5 cm ) D , Plate 8" ( 20,5 cm ) D . Condition : good condition with some gold losses .