Small Dutch Blue & White Royal Delft Hand Painted Vase Pion Square - 1975

The small square tin glazed earthenware vase decorated in shades of blue with stylized flowering plants.
Signed on the bottom in underglaze blue for:
DE PORCELEYNE FLES  - ROYAL DELFT
DELFT - HOLLAND  &  CU  =  1975
Painter’s initials: GVK  =  G.M. van Koppen 
Employment dates: 1971 - 1982    
Literature:
Shown   in Rick Erickson - Royal Delft  Page 75 - Fig.07-44 Model Pion Vierkant (square)

Height: 11,5 cm.  (4,5 inches.)
Weight: 100 grams.