Very Rare Antique Dutch Blue & White Royal Delft Commemorative Plate Garden Party Utrecht 1919

The rare tin glazed earthenware plate decorated in shades of blue with a park landscape with on the front a flower urn and a guitar with sheets with music notes. The rim decorated with flowering branches and two love birds and under with the coat of arms of the city Utrecht between two flower vases with flowers. These plates were sold by De Porceleyne Flesch during the 3 days 
LOUIS SEIZE TUINFEEST UTRECHT in the garden of 
Mr. Jhr. J.K. Lampsins van den Velden , Plompetorengracht 18. a money raising project for the poor people in Utrecht
Design by Leon Senf  Painter & Designer
Employment dates:  1878 - 1930

Signed on the back in underglaze blue for:
DE PORCELEYNE FLES  -  ROYAL DELFT
DELFT  -  HOLLAND  - Anno 1919     
Painter’s initials:JL =  Jan Willem Lispet.    

Employment dates: August 9th, 1887 – 1938
Literature:
The plate is NOT listed in Royal Delft by Rick Erickson

Diam.:  22,3 cm.  (8,8 inches.)     
Weight: 469 grams