Two Very Rare Small Antique Dutch Blue & White Royal Delft Commemorative Plates Flower Exhibition Haarlem 1910

The two small tin glazed earthenware plates decorated in shades of blue with two different scenes.
De Grote Kerk - St Bavo in Haarlem. In the front tulips. The rim also decorated with three tulips and HAARLEM
The second plate with two tulips in front of flower bulb fields and the Grote / St. Bavo Church in the horizon. The rim with a rotating floral decoration.
Made for the Nationale Bloemen Tentoonstelling in Haarlem in de Haarlemmerhout in front of het Paviljoen Wegelegen / Provinciehuis Noord Holland. (March 23 – May 29 1910.)
Design by Leon Senf
Signed on the back in underglaze blue for:
DE PORCELEYNE FLES   -   ROYAL DELFT 
Nationale Bloemententoonstelling. HAARLEM 1910
DELFT  -  HOLLAND Anno 1910     
Painter’s initials: LS  =  Leon Senf. Painter & Designer
Employment dates:  1878  - 1930
Painter’s initials: VH   =  Gijsbertus van Heijenoort
Employment dates: 1891 - 1941 
Literature:
Collection OKS  Ottema – Kingma – Stichting. Both plates in Keramiek Musem Princessehof Leeuwarden.
NOT listed in Royal Delft by Rick Erickson.

iam.:  14 cm.  (5,5 inches.)
Weight: 100 and 120 grams.