Nineteenth-century porcelain tea service hand-painted signature unknown

19th century porcelain tea service painted by hand. Service consisting of a teapot, a sugar bowl, a milk pot, 4 cups and their sub-cups. Small shine on the milk pot and a hair in the bottom of one of the cups (visible in the last 2 photos). Unknown signature "No.9" in a cartridge and a hollow "p." Teapot Height 13 x Length 23 cm Milk pot: Height 12 x Length 13 cm Sugar: Height 12 x Length 17.5 cm Cups: diameter 7 x height 6 Subcups: 12.5 cm