Antique Large Dutch Blue & White Royal Delft Hand Painted Rimmed Coaster with the Schreiers Tower Amsterdam - 1921

The large tin glazed earthenware rimmed coaster decorated in shades of blue with the Schreiers Tower on the Prins Hendrikkade in Amsterdam.  (Tower of tears). On the right the roof of the Central Station.
Signed on the back in underglaze blue for:
DE PORCELEYNE FLES - ROYAL DELFT
DELFT - HOLLAND  & AQ  = 1921
Painter: PG  = Petrus Johannes Gerbrands
Employment dates:  April 3th, 1890-1931
Painter’s initials:   VA =Thomas van Arum  
Employment dates: 31 March 1890 - 1945. 

Diam.:  15 cm.  (5,8 inches.)      
Weight: 203 grams.