The small tin glazed earthenware plate commemorating the 18th birthday of the crown princess Juliana. (The later Queen 1948-1980.) 
The center decorated in shades of blue with the Tree of Orange and flowers within the fence and in the tree a banderol with:
1909 * 30APR * 1927 above PRINSES JULIANA
The rim with the orange-coloured apples of Orange (N.B. Orange = The Royal Family)
Signed on the back in underglaze blue for:
DE PORCELEYNE FLES - ROYAL DELFT
DELFT - HOLLAND & AW = 1927
Painter’s initials: CK = Georg Conrad Kunz
Employment dates: Sept. 7th, 1891 - 1940
Diam.: 18 cm. (7,1 inches.)
Weight: 244 grams